ansible/library/apt_key
2013-02-18 17:03:50 +01:00

178 lines
6 KiB
Python

#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
# (c) 2012, Jayson Vantuyl <jayson@aggressive.ly>
#
# 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: apt_key
author: Jayson Vantuyl & others
version_added: 1.0
short_description: Add or remove an apt key
description:
- Add or remove an I(apt) key, optionally downloading it
notes:
- doesn't download the key unless it really needs it
- as a sanity check, downloaded key id must match the one specified
- best practice is to specify the key id and the url
options:
id:
required: false
default: none
description:
- identifier of key
url:
required: false
default: none
description:
- url to retrieve key from.
state:
required: false
choices: [ absent, present ]
default: present
description:
- used to specify if key is being added or revoked
examples:
- code: "apt_key: url=https://ftp-master.debian.org/keys/archive-key-6.0.asc state=present"
description: Add an Apt signing key, uses whichever key is at the URL
- code: "apt_key: id=473041FA url=https://ftp-master.debian.org/keys/archive-key-6.0.asc state=present"
description: Add an Apt signing key, will not download if present
- code: "apt_key: url=https://ftp-master.debian.org/keys/archive-key-6.0.asc state=absent"
description: Remove an Apt signing key, uses whichever key is at the URL
- code: "apt_key: id=473041FA state=absent"
description: Remove a Apt specific signing key
'''
# FIXME: standardize into module_common
from urllib2 import urlopen, URLError
from traceback import format_exc
from re import compile as re_compile
# FIXME: standardize into module_common
from distutils.spawn import find_executable
from os import environ
from sys import exc_info
import traceback
match_key = re_compile("^gpg:.*key ([0-9a-fA-F]+):.*$")
REQUIRED_EXECUTABLES=['gpg', 'grep', 'apt-key']
def check_missing_binaries(module):
missing = [e for e in REQUIRED_EXECUTABLES if not find_executable(e)]
if len(missing):
module.fail_json(msg="binaries are missing", names=all)
def all_keys(module):
(rc, out, err) = module.run_command("apt-key list")
results = []
lines = out.split('\n')
for line in lines:
if line.startswith("pub"):
tokens = line.split()
code = tokens[1]
(len_type, real_code) = code.split("/")
results.append(real_code)
return results
def key_present(module, key_id):
(rc, out, err) = module.run_command("apt-key list | 2>&1 grep -q %s" % key_id)
return rc == 0
def download_key(module, url):
# FIXME: move get_url code to common, allow for in-memory D/L, support proxies
# and reuse here
if url is None:
module.fail_json(msg="needed a URL but was not specified")
try:
connection = urlopen(url)
if connection is None:
module.fail_json("error connecting to download key from url")
data = connection.read()
return data
except:
module.fail_json(msg="error getting key id from url", traceback=format_exc())
def add_key(module, key):
cmd = "apt-key add -"
(rc, out, err) = module.run_command(cmd, data=key, check_rc=True)
return True
def remove_key(module, key_id):
# FIXME: use module.run_command, fail at point of error and don't discard useful stdin/stdout
cmd = 'apt-key del %s' % key_id
(rc, out, err) = module.run_command(cmd, check_rc=True)
return True
def main():
module = AnsibleModule(
argument_spec=dict(
id=dict(required=False, default=None),
url=dict(required=False),
data=dict(required=False),
key=dict(required=False),
state=dict(required=False, choices=['present', 'absent'], default='present')
),
)
key_id = module.params['id']
url = module.params['url']
data = module.params['data']
state = module.params['state']
changed = False
# FIXME: I think we have a common facility for this, if not, want
check_missing_binaries(module)
keys = all_keys(module)
return_values = {}
if state == 'present':
if key_id and key_id in keys:
module.exit_json(changed=False)
else:
if not data:
data = download_key(module, url)
if key_id and key_id in keys:
module.exit_json(changed=False)
else:
add_key(module, data)
changed=False
keys2 = all_keys(module)
if len(keys) != len(keys2):
changed=True
if key_id and not key_id in keys2:
module.fail_json(msg="key does not seem to have been added", id=key_id)
module.exit_json(changed=changed)
elif state == 'absent':
if not key_id:
module.fail_json(msg="key is required")
if key_id in keys:
if remove_key(module, key_id):
changed=True
else:
# FIXME: module.fail_json or exit-json immediately at point of failure
module.fail_json(msg="error removing key_id", **return_values)
module.exit_json(changed=changed, **return_values)
# include magic from lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()