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# vi: ts=4 expandtab
#
# Author: Mike Milner <mike.milner@canonical.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
import os
import pwd
import socket
from subprocess import check_call
import json
import StringIO
import ConfigParser
import cloudinit.CloudConfig as cc
import cloudinit.util as util
CERT_FILENAME = "/usr/share/ca-certificates/cloud-init-provided.crt"
def write_file(filename, contents, owner, group, mode):
"""
Write a file to disk with specified owner, group, and mode. If the file
exists already it will be overwritten.
@param filename: Full path to the new file.
@param contents: The contents of the newly created file.
@param owner: The username who should own the file.
@param group: The group for the new file.
@param mode: The octal mode (as string) for the new file.
"""
raise NotImplementedError()
def update_ca_certs():
"""
Updates the CA certificate cache on the current machine.
"""
check_call(["dpkg-reconfigure", "ca-certificates"])
check_call(["update-ca-certificates"])
def handle(name, cfg, cloud, log, args):
"""
Call to handle ca-cert sections in cloud-config file.
@param name: The module name "ca-cert" from cloud.cfg
@param cfg: A nested dict containing the entire cloud config contents.
@param cloud: The L{CloudInit} object in use
@param log: Pre-initialized Python logger object to use for logging
@param args: Any module arguments from cloud.cfg
"""
# If there isn't a ca-certs section in the configuration don't do anything
if not cfg.has_key('ca-certs'):
return
ca_cert_cfg = cfg['ca-certs']
# set the validation key based on the presence of either 'validation_key'
# or 'validation_cert'. In the case where both exist, 'validation_key'
# takes precedence
if ca_cert_cfg.has_key('trusted'):
trusted_certs = util.get_cfg_option_list_or_str(ca_cert_cfg, 'trusted')
if trusted_certs:
cert_file_contents = "\n".join(trusted_certs)
write_file(CERT_FILENAME, cert_file_contents, "root", "root", "644")
update_ca_certs()
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