CasperSecurity
# Copyright (C) 2014 Rackspace, US Inc.
#
# Author: Nate House <nathan.house@rackspace.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
import logging
from cloudinit import distros, helpers, subp, util
from cloudinit.distros import PackageList
from cloudinit.distros.parsers.hostname import HostnameConf
from cloudinit.net.netplan import CLOUDINIT_NETPLAN_FILE
from cloudinit.settings import PER_ALWAYS, PER_INSTANCE
LOG = logging.getLogger(__name__)
class Distro(distros.Distro):
locale_gen_fn = "/etc/locale.gen"
init_cmd = ["systemctl"] # init scripts
renderer_configs = {
"netplan": {
"netplan_path": CLOUDINIT_NETPLAN_FILE,
"netplan_header": "# generated by cloud-init\n",
"postcmds": True,
}
}
def __init__(self, name, cfg, paths):
distros.Distro.__init__(self, name, cfg, paths)
# This will be used to restrict certain
# calls from repeatedly happening (when they
# should only happen say once per instance...)
self._runner = helpers.Runners(paths)
self.osfamily = "arch"
cfg["ssh_svcname"] = "sshd"
def apply_locale(self, locale, out_fn=None):
if out_fn is not None and out_fn != "/etc/locale.conf":
LOG.warning(
"Invalid locale_configfile %s, only supported "
"value is /etc/locale.conf",
out_fn,
)
lines = [
util.make_header(),
# Hard-coding the charset isn't ideal, but there is no other way.
"%s UTF-8" % (locale),
"",
]
util.write_file(self.locale_gen_fn, "\n".join(lines))
subp.subp(["locale-gen"], capture=False)
# In the future systemd can handle locale-gen stuff:
# https://github.com/systemd/systemd/pull/9864
subp.subp(["localectl", "set-locale", locale], capture=False)
def install_packages(self, pkglist: PackageList):
self.update_package_sources()
self.package_command("", pkgs=pkglist)
def _write_hostname(self, hostname, filename):
conf = None
try:
# Try to update the previous one
# so lets see if we can read it first.
conf = self._read_hostname_conf(filename)
except IOError:
create_hostname_file = util.get_cfg_option_bool(
self._cfg, "create_hostname_file", True
)
if create_hostname_file:
pass
else:
LOG.info(
"create_hostname_file is False; hostname file not created"
)
return
if not conf:
conf = HostnameConf("")
conf.set_hostname(hostname)
util.write_file(filename, str(conf), omode="w", mode=0o644)
def _read_system_hostname(self):
sys_hostname = self._read_hostname(self.hostname_conf_fn)
return (self.hostname_conf_fn, sys_hostname)
def _read_hostname_conf(self, filename):
conf = HostnameConf(util.load_text_file(filename))
conf.parse()
return conf
def _read_hostname(self, filename, default=None):
hostname = None
try:
conf = self._read_hostname_conf(filename)
hostname = conf.hostname
except IOError:
pass
if not hostname:
return default
return hostname
# hostname (inetutils) isn't installed per default on arch, so we use
# hostnamectl which is installed per default (systemd).
def _apply_hostname(self, hostname):
LOG.debug(
"Non-persistently setting the system hostname to %s", hostname
)
try:
subp.subp(["hostnamectl", "--transient", "set-hostname", hostname])
except subp.ProcessExecutionError:
util.logexc(
LOG,
"Failed to non-persistently adjust the system hostname to %s",
hostname,
)
def set_timezone(self, tz):
distros.set_etc_timezone(tz=tz, tz_file=self._find_tz_file(tz))
def package_command(self, command, args=None, pkgs=None):
if pkgs is None:
pkgs = []
cmd = ["pacman", "-Sy", "--quiet", "--noconfirm"]
# Redirect output
if args and isinstance(args, str):
cmd.append(args)
elif args and isinstance(args, list):
cmd.extend(args)
if command == "upgrade":
command = "-u"
if command:
cmd.append(command)
pkglist = util.expand_package_list("%s-%s", pkgs)
cmd.extend(pkglist)
# Allow the output of this to flow outwards (ie not be captured)
subp.subp(cmd, capture=False)
def update_package_sources(self, *, force=False):
self._runner.run(
"update-sources",
self.package_command,
["-y"],
freq=PER_ALWAYS if force else PER_INSTANCE,
)