mirror of
https://github.com/freedombox/FreedomBox.git
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217 lines
7.1 KiB
Python
217 lines
7.1 KiB
Python
#
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# This file is part of Plinth.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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"""
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Plinth module for configuring timezone, hostname etc.
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"""
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from django import forms
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from django.contrib import messages
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from django.contrib.auth.decorators import login_required
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from django.core import validators
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from django.template.response import TemplateResponse
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from gettext import gettext as _
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import logging
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import re
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import socket
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from plinth import actions
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from plinth import cfg
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from plinth.signals import pre_hostname_change, post_hostname_change
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from plinth.signals import domainname_change
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LOGGER = logging.getLogger(__name__)
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def get_hostname():
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"""Return the hostname"""
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return socket.gethostname()
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def get_domainname():
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"""Return the domainname"""
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fqdn = socket.getfqdn()
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return '.'.join(fqdn.split('.')[1:])
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class TrimmedCharField(forms.CharField):
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"""Trim the contents of a CharField"""
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def clean(self, value):
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"""Clean and validate the field value"""
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if value:
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value = value.strip()
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return super(TrimmedCharField, self).clean(value)
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class ConfigurationForm(forms.Form):
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"""Main system configuration form"""
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time_zone = forms.ChoiceField(
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label=_('Time Zone'),
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help_text=_('Set your timezone to get accurate timestamps. \
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This information will be used to set your systemwide timezone'))
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# We're more conservative than RFC 952 and RFC 1123
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hostname = TrimmedCharField(
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label=_('Hostname'),
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help_text=_('Your hostname is the local name by which other machines \
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on your LAN can reach you. It must be alphanumeric, start with an alphabet \
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and must not be greater than 63 characters in length.'),
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validators=[
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validators.RegexValidator(r'^[a-zA-Z][a-zA-Z0-9]{,62}$',
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_('Invalid hostname'))])
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domainname = TrimmedCharField(
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label=_('Domain Name'),
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help_text=_('Your domain name is the global name by which other \
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machines on the Internet can reach you. It must consist of alphanumeric words \
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separated by dots.'),
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validators=[
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validators.RegexValidator(r'^[a-zA-Z][a-zA-Z0-9.]*$',
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_('Invalid domain name'))])
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def __init__(self, *args, **kwargs):
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# pylint: disable-msg=E1101, W0233
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forms.Form.__init__(self, *args, **kwargs)
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self.fields['time_zone'].choices = [(zone, zone)
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for zone in self.get_time_zones()]
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@staticmethod
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def get_time_zones():
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"""Return list of available time zones"""
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time_zones = []
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for line in open('/usr/share/zoneinfo/zone.tab'):
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if re.match(r'^(#|\s*$)', line):
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continue
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try:
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time_zones.append(line.split()[2])
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except IndexError:
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pass
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time_zones.sort()
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return time_zones
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def init():
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"""Initialize the module"""
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menu = cfg.main_menu.get('system:index')
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menu.add_urlname(_('Configure'), 'glyphicon-cog', 'config:index', 10)
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@login_required
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def index(request):
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"""Serve the configuration form"""
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status = get_status()
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form = None
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if request.method == 'POST':
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form = ConfigurationForm(request.POST, prefix='configuration')
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# pylint: disable-msg=E1101
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if form.is_valid():
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_apply_changes(request, status, form.cleaned_data)
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status = get_status()
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form = ConfigurationForm(initial=status,
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prefix='configuration')
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else:
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form = ConfigurationForm(initial=status, prefix='configuration')
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return TemplateResponse(request, 'config.html',
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{'title': _('General Configuration'),
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'form': form})
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def get_status():
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"""Return the current status"""
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return {'hostname': get_hostname(),
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'domainname': get_domainname(),
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'time_zone': open('/etc/timezone').read().rstrip()}
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def _apply_changes(request, old_status, new_status):
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"""Apply the form changes"""
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if old_status['hostname'] != new_status['hostname']:
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try:
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set_hostname(new_status['hostname'])
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except Exception as exception:
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messages.error(request, _('Error setting hostname: %s') %
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exception)
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else:
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messages.success(request, _('Hostname set'))
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else:
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messages.info(request, _('Hostname is unchanged'))
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if old_status['domainname'] != new_status['domainname']:
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try:
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set_domainname(new_status['domainname'])
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except Exception as exception:
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messages.error(request, _('Error setting domain name: %s') %
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exception)
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else:
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messages.success(request, _('Domain name set'))
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else:
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messages.info(request, _('Domain name is unchanged'))
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if old_status['time_zone'] != new_status['time_zone']:
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try:
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actions.superuser_run('timezone-change', [new_status['time_zone']])
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except Exception as exception:
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messages.error(request, _('Error setting time zone: %s') %
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exception)
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else:
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messages.success(request, _('Time zone set'))
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else:
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messages.info(request, _('Time zone is unchanged'))
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def set_hostname(hostname):
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"""Sets machine hostname to hostname"""
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old_hostname = get_hostname()
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# Hostname should be ASCII. If it's unicode but passed our
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# valid_hostname check, convert to ASCII.
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hostname = str(hostname)
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pre_hostname_change.send_robust(sender='config',
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old_hostname=old_hostname,
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new_hostname=hostname)
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LOGGER.info('Changing hostname to - %s', hostname)
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actions.superuser_run('hostname-change', hostname)
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post_hostname_change.send_robust(sender='config',
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old_hostname=old_hostname,
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new_hostname=hostname)
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def set_domainname(domainname):
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"""Sets machine domain name to domainname"""
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old_domainname = get_domainname()
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# Domain name should be ASCII. If it's unicode, convert to ASCII.
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domainname = str(domainname)
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LOGGER.info('Changing domain name to - %s', domainname)
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actions.superuser_run('domainname-change', domainname)
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domainname_change.send_robust(sender='config',
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old_domainname=old_domainname,
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new_domainname=domainname)
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