2015-02-23 12:51:41 +00:00

267 lines
9.0 KiB
Python

#
# This file is part of Plinth.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from django import forms
from django.contrib import messages
from django.contrib.auth.decorators import login_required
from django.core import validators
from django.core.urlresolvers import reverse_lazy
from django.template.response import TemplateResponse
from gettext import gettext as _
import logging
from plinth import actions
from plinth import cfg
from plinth import package
LOGGER = logging.getLogger(__name__)
subsubmenu = [{'url': reverse_lazy('dynamicdns:index'),
'text': _('About')},
{'url': reverse_lazy('dynamicdns:configure'),
'text': _('Configure')},
{'url': reverse_lazy('dynamicdns:statuspage'),
'text': _('Status')}
]
def init():
"""Initialize the dynamicdns module"""
menu = cfg.main_menu.get('apps:index')
menu.add_urlname('Dynamic DNS', 'glyphicon-refresh',
'dynamicdns:index', 40)
@login_required
@package.required('ez-ipupdate')
def index(request):
"""Serve dynamic DNS page"""
index_subsubmenu = subsubmenu
return TemplateResponse(request, 'dynamicdns.html',
{'title': _('dynamicdns'),
'subsubmenu': index_subsubmenu})
class TrimmedCharField(forms.CharField):
"""Trim the contents of a CharField"""
def clean(self, value):
"""Clean and validate the field value"""
if value:
value = value.strip()
return super(TrimmedCharField, self).clean(value)
class ConfigureForm(forms.Form):
"""Form to configure the dynamic DNS client"""
enabled = forms.BooleanField(label=_('Enable dynamicdns'),
required=False)
dynamicdns_server = TrimmedCharField(
label=_('Server Address'),
help_text=_('Example: gnudip.provider.org'),
validators=[
validators.RegexValidator(r'^[\w-]{1,63}(\.[\w-]{1,63})*$',
_('Invalid server name'))])
dynamicdns_domain = TrimmedCharField(
label=_('Domain Name'),
help_text=_('Example: hostname.sds-ip.de'),
validators=[
validators.RegexValidator(r'^[\w-]{1,63}(\.[\w-]{1,63})*$',
_('Invalid domain name'))])
dynamicdns_user = TrimmedCharField(
label=_('Username'),
help_text=_('You should have been requested to select a username \
when you created the account'))
dynamicdns_secret = TrimmedCharField(
label=_('Password'), widget=forms.PasswordInput(),
required=False,
help_text=_('You should have been requested to select a password \
when you created the account.'))
dynamicdns_secret_repeat = TrimmedCharField(
label=_('repeat Password'), widget=forms.PasswordInput(),
required=False,
help_text=_('insert the password again to avoid typos.'),)
dynamicdns_ipurl = TrimmedCharField(
label=_('IP check URL'),
required=False,
help_text=_('Optional Value. If your FreedomBox is not connected \
directly to the Internet (i.e. connected to a NAT \
router) this URL is used to figure out the real Internet \
IP. The URL should simply return the IP where the \
client comes from. Example: \
http://myip.datasystems24.de'),
validators=[
validators.URLValidator(schemes=['http', 'https', 'ftp'])])
@login_required
@package.required('ez-ipupdate')
def configure(request):
"""Serve the configuration form"""
status = get_status()
form = None
if request.method == 'POST':
form = ConfigureForm(request.POST, prefix='dynamicdns')
if form.is_valid():
_apply_changes(request, status, form.cleaned_data)
status = get_status()
form = ConfigureForm(initial=status, prefix='dynamicdns')
else:
form = ConfigureForm(initial=status, prefix='dynamicdns')
return TemplateResponse(request, 'dynamicdns_configure.html',
{'title': _('Configure dynamicdns Client'),
'form': form,
'subsubmenu': subsubmenu})
@login_required
@package.required('ez-ipupdate')
def statuspage(request):
"""Serve the status page """
check_nat = actions.run('dynamicdns', ['get-nat'])
last_update = actions.run('dynamicdns', ['get-last-success'])
no_nat = check_nat.strip() == 'no'
nat_unchecked = check_nat.strip() == 'unknown'
timer = actions.run('dynamicdns', ['get-timer'])
if no_nat:
LOGGER.info('we are not behind a NAT')
if nat_unchecked:
LOGGER.info('we did not checked if we are behind a NAT')
return TemplateResponse(request, 'dynamicdns_status.html',
{'title': _('Status of dynamicdns Client'),
'no_nat': no_nat,
'nat_unchecked': nat_unchecked,
'timer': timer,
'last_update': last_update,
'subsubmenu': subsubmenu})
def get_status():
"""Return the current status"""
"""ToDo: use key/value instead of hard coded value list"""
status = {}
output = actions.run('dynamicdns', 'status')
details = output.split()
status['enabled'] = (output.split()[0] == 'enabled')
if len(details) > 1:
status['dynamicdns_server'] = details[1]
else:
status['dynamicdns_server'] = ''
if len(details) > 2:
status['dynamicdns_domain'] = details[2]
else:
status['dynamicdns_domain'] = ''
if len(details) > 3:
status['dynamicdns_user'] = details[3]
else:
status['dynamicdns_user'] = ''
if len(details) > 4:
status['dynamicdns_secret'] = details[4]
else:
status['dynamicdns_secret'] = ''
if len(details) > 5:
status['dynamicdns_ipurl'] = details[5]
else:
status['dynamicdns_secret'] = ''
return status
def _apply_changes(request, old_status, new_status):
"""Apply the changes to Dynamic DNS client"""
LOGGER.info('New status is - %s', new_status)
LOGGER.info('Old status was - %s', old_status)
fail = False
if new_status['dynamicdns_secret_repeat'] != \
new_status['dynamicdns_secret']:
messages.error(request, _('passwords does not match'))
fail = True
if old_status['dynamicdns_secret'] == '' and \
new_status['dynamicdns_secret'] == '':
messages.error(request, _('please give a password'))
fail = True
if not fail:
if new_status['dynamicdns_secret'] == '':
new_status['dynamicdns_secret'] = old_status['dynamicdns_secret']
if new_status['dynamicdns_ipurl'] == '':
new_status['dynamicdns_ipurl'] = 'none'
if old_status['dynamicdns_server'] != \
new_status['dynamicdns_server'] or \
old_status['dynamicdns_domain'] != \
new_status['dynamicdns_domain'] or \
old_status['dynamicdns_user'] != \
new_status['dynamicdns_user'] or \
old_status['dynamicdns_secret'] != \
new_status['dynamicdns_secret'] or \
old_status['dynamicdns_ipurl'] != \
new_status['dynamicdns_ipurl'] or \
old_status['enabled'] != \
new_status['enabled']:
_run(['configure', '-s', new_status['dynamicdns_server'],
'-d', new_status['dynamicdns_domain'],
'-u', new_status['dynamicdns_user'],
'-p', new_status['dynamicdns_secret'],
'-I', new_status['dynamicdns_ipurl']])
if old_status['enabled']:
_run(['stop'])
if new_status['enabled']:
_run(['start'])
messages.success(request,
_('Dynamic DNS configuration is updated!'))
else:
messages.error(request,
_('At least one failure occured,\
please check your input.'))
def _run(arguments, superuser=False):
"""Run a given command and raise exception if there was an error"""
command = 'dynamicdns'
if superuser:
return actions.superuser_run(command, arguments)
else:
return actions.run(command, arguments)