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# vi: ts=4 expandtab
#
# 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 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/>.
"""
Byobu
-----
**Summary:** enable/disable byobu system wide and for default user
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``
**Internal name:** ``cc_byobu``
**Module frequency:** per instance
**Supported distros:** ubuntu, debian
**Config keys**::
byobu_by_default: <user/system>
"""
# Ensure this is aliased to a name not 'distros'
# since the module attribute 'distros'
# is a list of distros that are supported, not a sub-module
from cloudinit import distros as ds
from cloudinit import util
distros = ['ubuntu', 'debian']
def handle(name, cfg, cloud, log, args):
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.warn("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) = ds.normalize_users_groups(cfg, cloud.distro)
(user, _user_config) = ds.extract_default(users)
if not user:
log.warn(("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)
util.subp(cmd, capture=False)
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