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# Copyright (C) 2009-2010 Canonical Ltd.
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# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
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#
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# Author: Scott Moser <scott.moser@canonical.com>
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# Author: Juerg Haefliger <juerg.haefliger@hp.com>
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#
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# This file is part of cloud-init. See LICENSE file for license information.
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"""
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Byobu
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-----
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**Summary:** enable/disable byobu system wide and for default user
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This module controls whether byobu is enabled or disabled system wide and for
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the default system user. If byobu is to be enabled, this module will ensure it
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is installed. Likewise, if it is to be disabled, it will be removed if
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installed.
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Valid configuration options for this module are:
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- ``enable-system``: enable byobu system wide
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- ``enable-user``: enable byobu for the default user
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- ``disable-system``: disable byobu system wide
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- ``disable-user``: disable byobu for the default user
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- ``enable``: enable byobu both system wide and for default user
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- ``disable``: disable byobu for all users
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- ``user``: alias for ``enable-user``
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- ``system``: alias for ``enable-system``
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**Internal name:** ``cc_byobu``
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**Module frequency:** per instance
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**Supported distros:** ubuntu, debian
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**Config keys**::
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byobu_by_default: <user/system>
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"""
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from cloudinit.distros import ug_util
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from cloudinit import subp
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from cloudinit import util
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distros = ['ubuntu', 'debian']
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def handle(name, cfg, cloud, log, args):
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if len(args) != 0:
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value = args[0]
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else:
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value = util.get_cfg_option_str(cfg, "byobu_by_default", "")
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if not value:
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log.debug("Skipping module named %s, no 'byobu' values found", name)
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return
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if value == "user" or value == "system":
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value = "enable-%s" % value
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valid = ("enable-user", "enable-system", "enable",
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"disable-user", "disable-system", "disable")
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if value not in valid:
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log.warning("Unknown value %s for byobu_by_default", value)
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mod_user = value.endswith("-user")
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mod_sys = value.endswith("-system")
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if value.startswith("enable"):
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bl_inst = "install"
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dc_val = "byobu byobu/launch-by-default boolean true"
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mod_sys = True
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else:
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if value == "disable":
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mod_user = True
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mod_sys = True
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bl_inst = "uninstall"
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dc_val = "byobu byobu/launch-by-default boolean false"
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shcmd = ""
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if mod_user:
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(users, _groups) = ug_util.normalize_users_groups(cfg, cloud.distro)
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(user, _user_config) = ug_util.extract_default(users)
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if not user:
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log.warning(("No default byobu user provided, "
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"can not launch %s for the default user"), bl_inst)
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else:
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shcmd += " sudo -Hu \"%s\" byobu-launcher-%s" % (user, bl_inst)
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shcmd += " || X=$(($X+1)); "
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if mod_sys:
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shcmd += "echo \"%s\" | debconf-set-selections" % dc_val
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shcmd += " && dpkg-reconfigure byobu --frontend=noninteractive"
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shcmd += " || X=$(($X+1)); "
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if len(shcmd):
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cmd = ["/bin/sh", "-c", "%s %s %s" % ("X=0;", shcmd, "exit $X")]
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log.debug("Setting byobu to %s", value)
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subp.subp(cmd, capture=False)
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# vi: ts=4 expandtab
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