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# Copyright (C) 2009-2010 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
"""Byobu: Enable/disable byobu system wide and for default user."""
from logging import Logger
from cloudinit import subp, util
from cloudinit.cloud import Cloud
from cloudinit.config import Config
from cloudinit.config.schema import MetaSchema, get_meta_doc
from cloudinit.distros import ug_util
from cloudinit.settings import PER_INSTANCE
MODULE_DESCRIPTION = """\
This module controls whether byobu is enabled or disabled system wide and for
the default system user. If byobu is to be enabled, this module will ensure it
is installed. Likewise, if it is to be disabled, it will be removed if
installed.
Valid configuration options for this module are:
- ``enable-system``: enable byobu system wide
- ``enable-user``: enable byobu for the default user
- ``disable-system``: disable byobu system wide
- ``disable-user``: disable byobu for the default user
- ``enable``: enable byobu both system wide and for default user
- ``disable``: disable byobu for all users
- ``user``: alias for ``enable-user``
- ``system``: alias for ``enable-system``
"""
distros = ["ubuntu", "debian"]
meta: MetaSchema = {
"id": "cc_byobu",
"name": "Byobu",
"title": "Enable/disable byobu system wide and for default user",
"description": MODULE_DESCRIPTION,
"distros": distros,
"frequency": PER_INSTANCE,
"examples": [
"byobu_by_default: enable-user",
"byobu_by_default: disable-system",
],
"activate_by_schema_keys": [],
}
__doc__ = get_meta_doc(meta)
def handle(
name: str, cfg: Config, cloud: Cloud, log: Logger, args: list
) -> None:
if len(args) != 0:
value = args[0]
else:
value = util.get_cfg_option_str(cfg, "byobu_by_default", "")
if not value:
log.debug("Skipping module named %s, no 'byobu' values found", name)
return
if value == "user" or value == "system":
value = "enable-%s" % value
valid = (
"enable-user",
"enable-system",
"enable",
"disable-user",
"disable-system",
"disable",
)
if value not in valid:
log.warning("Unknown value %s for byobu_by_default", value)
mod_user = value.endswith("-user")
mod_sys = value.endswith("-system")
if value.startswith("enable"):
bl_inst = "install"
dc_val = "byobu byobu/launch-by-default boolean true"
mod_sys = True
else:
if value == "disable":
mod_user = True
mod_sys = True
bl_inst = "uninstall"
dc_val = "byobu byobu/launch-by-default boolean false"
shcmd = ""
if mod_user:
(users, _groups) = ug_util.normalize_users_groups(cfg, cloud.distro)
(user, _user_config) = ug_util.extract_default(users)
if not user:
log.warning(
"No default byobu user provided, "
"can not launch %s for the default user",
bl_inst,
)
else:
shcmd += ' sudo -Hu "%s" byobu-launcher-%s' % (user, bl_inst)
shcmd += " || X=$(($X+1)); "
if mod_sys:
shcmd += 'echo "%s" | debconf-set-selections' % dc_val
shcmd += " && dpkg-reconfigure byobu --frontend=noninteractive"
shcmd += " || X=$(($X+1)); "
if len(shcmd):
cmd = ["/bin/sh", "-c", "%s %s %s" % ("X=0;", shcmd, "exit $X")]
log.debug("Setting byobu to %s", value)
subp.subp(cmd, capture=False)
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