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# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import six
import subprocess
from charmhelpers.core.hookenv import (
log,
WARNING,
)
from charmhelpers.contrib.hardening.audits.file import (
FilePermissionAudit,
DirectoryPermissionAudit,
TemplatedFile,
)
from charmhelpers.contrib.hardening.mysql import TEMPLATES_DIR
from charmhelpers.contrib.hardening import utils
def get_audits():
"""Get MySQL hardening config audits.
:returns: dictionary of audits
"""
if subprocess.call(['which', 'mysql'], stdout=subprocess.PIPE) != 0:
log("MySQL does not appear to be installed on this node - "
"skipping mysql hardening", level=WARNING)
return []
settings = utils.get_settings('mysql')
hardening_settings = settings['hardening']
my_cnf = hardening_settings['mysql-conf']
audits = [
FilePermissionAudit(paths=[my_cnf], user='root',
group='root', mode=0o0600),
TemplatedFile(hardening_settings['hardening-conf'],
MySQLConfContext(),
TEMPLATES_DIR,
mode=0o0750,
user='mysql',
group='root',
service_actions=[{'service': 'mysql',
'actions': ['restart']}]),
# MySQL and Percona charms do not allow configuration of the
# data directory, so use the default.
DirectoryPermissionAudit('/var/lib/mysql',
user='mysql',
group='mysql',
recursive=False,
mode=0o755),
DirectoryPermissionAudit('/etc/mysql',
user='root',
group='root',
recursive=False,
mode=0o700),
]
return audits
class MySQLConfContext(object):
"""Defines the set of key/value pairs to set in a mysql config file.
This context, when called, will return a dictionary containing the
key/value pairs of setting to specify in the
/etc/mysql/conf.d/hardening.cnf file.
"""
def __call__(self):
settings = utils.get_settings('mysql')
# Translate for python3
return {'mysql_settings':
[(k, v) for k, v in six.iteritems(settings['security'])]}
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