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# Copyright 2019-2024 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library. If not, see <http://www.gnu.org/licenses/>.
# Fixup non existent time-zones. Some systems have time-zone set to: Los*
# (Los_Angeles), Den* (Denver), New* (New_York) ... but those are no real IANA
# assigned time zones. In the past they have been silently remapped.
#
# Time to clean it up!
#
# Migrate all configured timezones to real IANA assigned timezones!
import re
from vyos.configtree import ConfigTree
from vyos.utils.process import cmd
tz_base = ['system', 'time-zone']
def migrate(config: ConfigTree) -> None:
if not config.exists(tz_base):
# Nothing to do
return
tz = config.return_value(tz_base)
# retrieve all valid timezones
try:
tz_datas = cmd('timedatectl list-timezones')
except OSError:
tz_datas = ''
tz_data = tz_datas.split('\n')
if re.match(r'[Ll][Oo][Ss].+', tz):
tz = 'America/Los_Angeles'
elif re.match(r'[Dd][Ee][Nn].+', tz):
tz = 'America/Denver'
elif re.match(r'[Hh][Oo][Nn][Oo].+', tz):
tz = 'Pacific/Honolulu'
elif re.match(r'[Nn][Ee][Ww].+', tz):
tz = 'America/New_York'
elif re.match(r'[Cc][Hh][Ii][Cc]*.+', tz):
tz = 'America/Chicago'
elif re.match(r'[Aa][Nn][Cc].+', tz):
tz = 'America/Anchorage'
elif re.match(r'[Pp][Hh][Oo].+', tz):
tz = 'America/Phoenix'
elif re.match(r'GMT(.+)?', tz):
tz = 'Etc/' + tz
elif tz not in tz_data:
# assign default UTC timezone
tz = 'UTC'
# replace timezone data is required
config.set(tz_base, value=tz)
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