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# -*- coding: utf-8 -*-
# Ansible module to import third party repo keys to your rpm db
# Copyright: (c) 2013, Héctor Acosta <hector.acosta@gazzang.com>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
DOCUMENTATION = '''
---
module: rpm_key
author:
- Hector Acosta (@hacosta) <hector.acosta@gazzang.com>
short_description: Adds or removes a gpg key from the rpm db
description:
- Adds or removes (rpm --import) a gpg key to your rpm database.
version_added: "1.3"
options:
key:
description:
- Key that will be modified. Can be a url, a file on the managed node, or a keyid if the key
already exists in the database.
type: str
required: true
state:
description:
- If the key will be imported or removed from the rpm db.
type: str
default: present
choices: [ absent, present ]
validate_certs:
description:
- If C(false) and the C(key) is a url starting with https, SSL certificates will not be validated.
- This should only be used on personally controlled sites using self-signed certificates.
type: bool
default: 'yes'
fingerprint:
description:
- The long-form fingerprint of the key being imported.
- This will be used to verify the specified key.
type: str
version_added: 2.9
extends_documentation_fragment:
- action_common_attributes
attributes:
check_mode:
support: full
diff_mode:
support: none
platform:
platforms: rhel
'''
EXAMPLES = '''
- name: Import a key from a url
ansible.builtin.rpm_key:
state: present
key: http://apt.sw.be/RPM-GPG-KEY.dag.txt
- name: Import a key from a file
ansible.builtin.rpm_key:
state: present
key: /path/to/key.gpg
- name: Ensure a key is not present in the db
ansible.builtin.rpm_key:
state: absent
key: DEADB33F
- name: Verify the key, using a fingerprint, before import
ansible.builtin.rpm_key:
key: /path/to/RPM-GPG-KEY.dag.txt
fingerprint: EBC6 E12C 62B1 C734 026B 2122 A20E 5214 6B8D 79E6
'''
RETURN = r'''#'''
import re
import os.path
import tempfile
# import module snippets
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.urls import fetch_url
from ansible.module_utils._text import to_native
def is_pubkey(string):
"""Verifies if string is a pubkey"""
pgp_regex = ".*?(-----BEGIN PGP PUBLIC KEY BLOCK-----.*?-----END PGP PUBLIC KEY BLOCK-----).*"
return bool(re.match(pgp_regex, to_native(string, errors='surrogate_or_strict'), re.DOTALL))
class RpmKey(object):
def __init__(self, module):
# If the key is a url, we need to check if it's present to be idempotent,
# to do that, we need to check the keyid, which we can get from the armor.
keyfile = None
should_cleanup_keyfile = False
self.module = module
self.rpm = self.module.get_bin_path('rpm', True)
state = module.params['state']
key = module.params['key']
fingerprint = module.params['fingerprint']
if fingerprint:
fingerprint = fingerprint.replace(' ', '').upper()
self.gpg = self.module.get_bin_path('gpg')
if not self.gpg:
self.gpg = self.module.get_bin_path('gpg2', required=True)
if '://' in key:
keyfile = self.fetch_key(key)
keyid = self.getkeyid(keyfile)
should_cleanup_keyfile = True
elif self.is_keyid(key):
keyid = key
elif os.path.isfile(key):
keyfile = key
keyid = self.getkeyid(keyfile)
else:
self.module.fail_json(msg="Not a valid key %s" % key)
keyid = self.normalize_keyid(keyid)
if state == 'present':
if self.is_key_imported(keyid):
module.exit_json(changed=False)
else:
if not keyfile:
self.module.fail_json(msg="When importing a key, a valid file must be given")
if fingerprint:
has_fingerprint = self.getfingerprint(keyfile)
if fingerprint != has_fingerprint:
self.module.fail_json(
msg="The specified fingerprint, '%s', does not match the key fingerprint '%s'" % (fingerprint, has_fingerprint)
)
self.import_key(keyfile)
if should_cleanup_keyfile:
self.module.cleanup(keyfile)
module.exit_json(changed=True)
else:
if self.is_key_imported(keyid):
self.drop_key(keyid)
module.exit_json(changed=True)
else:
module.exit_json(changed=False)
def fetch_key(self, url):
"""Downloads a key from url, returns a valid path to a gpg key"""
rsp, info = fetch_url(self.module, url)
if info['status'] != 200:
self.module.fail_json(msg="failed to fetch key at %s , error was: %s" % (url, info['msg']))
key = rsp.read()
if not is_pubkey(key):
self.module.fail_json(msg="Not a public key: %s" % url)
tmpfd, tmpname = tempfile.mkstemp()
self.module.add_cleanup_file(tmpname)
tmpfile = os.fdopen(tmpfd, "w+b")
tmpfile.write(key)
tmpfile.close()
return tmpname
def normalize_keyid(self, keyid):
"""Ensure a keyid doesn't have a leading 0x, has leading or trailing whitespace, and make sure is uppercase"""
ret = keyid.strip().upper()
if ret.startswith('0x'):
return ret[2:]
elif ret.startswith('0X'):
return ret[2:]
else:
return ret
def getkeyid(self, keyfile):
stdout, stderr = self.execute_command([self.gpg, '--no-tty', '--batch', '--with-colons', '--fixed-list-mode', keyfile])
for line in stdout.splitlines():
line = line.strip()
if line.startswith('pub:'):
return line.split(':')[4]
self.module.fail_json(msg="Unexpected gpg output")
def getfingerprint(self, keyfile):
stdout, stderr = self.execute_command([
self.gpg, '--no-tty', '--batch', '--with-colons',
'--fixed-list-mode', '--with-fingerprint', keyfile
])
for line in stdout.splitlines():
line = line.strip()
if line.startswith('fpr:'):
# As mentioned here,
#
# https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=blob_plain;f=doc/DETAILS
#
# The description of the `fpr` field says
#
# "fpr :: Fingerprint (fingerprint is in field 10)"
#
return line.split(':')[9]
self.module.fail_json(msg="Unexpected gpg output")
def is_keyid(self, keystr):
"""Verifies if a key, as provided by the user is a keyid"""
return re.match('(0x)?[0-9a-f]{8}', keystr, flags=re.IGNORECASE)
def execute_command(self, cmd):
rc, stdout, stderr = self.module.run_command(cmd, use_unsafe_shell=True)
if rc != 0:
self.module.fail_json(msg=stderr)
return stdout, stderr
def is_key_imported(self, keyid):
cmd = self.rpm + ' -q gpg-pubkey'
rc, stdout, stderr = self.module.run_command(cmd)
if rc != 0: # No key is installed on system
return False
cmd += ' --qf "%{description}" | ' + self.gpg + ' --no-tty --batch --with-colons --fixed-list-mode -'
stdout, stderr = self.execute_command(cmd)
for line in stdout.splitlines():
if keyid in line.split(':')[4]:
return True
return False
def import_key(self, keyfile):
if not self.module.check_mode:
self.execute_command([self.rpm, '--import', keyfile])
def drop_key(self, keyid):
if not self.module.check_mode:
self.execute_command([self.rpm, '--erase', '--allmatches', "gpg-pubkey-%s" % keyid[-8:].lower()])
def main():
module = AnsibleModule(
argument_spec=dict(
state=dict(type='str', default='present', choices=['absent', 'present']),
key=dict(type='str', required=True, no_log=False),
fingerprint=dict(type='str'),
validate_certs=dict(type='bool', default=True),
),
supports_check_mode=True,
)
RpmKey(module)
if __name__ == '__main__':
main()
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