mirror of
https://github.com/freedombox/FreedomBox.git
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118 lines
3.8 KiB
Python
118 lines
3.8 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 upgrades
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"""
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from django.contrib import messages
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from django.core.urlresolvers import reverse_lazy
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from django.template.response import TemplateResponse
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from django.utils.translation import ugettext as _, ugettext_lazy
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import subprocess
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from .forms import ConfigureForm
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from plinth import actions
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from plinth import views
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from plinth.errors import ActionError
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from plinth.modules import upgrades
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subsubmenu = [{'url': reverse_lazy('upgrades:index'),
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'text': ugettext_lazy('Automatic Upgrades')},
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{'url': reverse_lazy('upgrades:upgrade'),
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'text': ugettext_lazy('Upgrade Packages')}]
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LOG_FILE = '/var/log/unattended-upgrades/unattended-upgrades.log'
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LOCK_FILE = '/var/log/dpkg/lock'
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class ConfigurationView(views.ConfigurationView):
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"""Serve configuration page."""
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form_class = ConfigureForm
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def get_context_data(self, **kwargs):
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"""Return the context data for rendering the template view."""
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if 'subsubmenu' not in kwargs:
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kwargs['subsubmenu'] = subsubmenu
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return super().get_context_data(**kwargs)
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def get_template_names(self):
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"""Return the list of template names for the view."""
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return ['upgrades_configure.html']
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def apply_changes(self, old_status, new_status):
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"""Apply the form changes."""
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if old_status['auto_upgrades_enabled'] \
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== new_status['auto_upgrades_enabled']:
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return False
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try:
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upgrades.enable(new_status['auto_upgrades_enabled'])
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except ActionError as exception:
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error = exception.args[2]
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messages.error(
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self.request,
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_('Error when configuring unattended-upgrades: {error}')
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.format(error=error))
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return True
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if new_status['auto_upgrades_enabled']:
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messages.success(self.request, _('Automatic upgrades enabled'))
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else:
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messages.success(self.request, _('Automatic upgrades disabled'))
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return True
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def is_package_manager_busy():
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"""Return whether a package manager is running."""
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try:
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subprocess.check_output(['lsof', '/var/lib/dpkg/lock'])
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return True
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except subprocess.CalledProcessError:
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return False
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def get_log():
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"""Return the current log for unattended upgrades."""
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try:
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with open(LOG_FILE, 'r') as file_handle:
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return file_handle.read()
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except IOError:
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return None
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def upgrade(request):
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"""Serve the upgrade page."""
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is_busy = is_package_manager_busy()
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if request.method == 'POST':
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try:
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actions.superuser_run('upgrades', ['run'])
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messages.success(request, _('Upgrade process started.'))
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is_busy = True
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except ActionError:
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messages.error(request, _('Starting upgrade failed.'))
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return TemplateResponse(request, 'upgrades.html',
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{'title': upgrades.title,
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'description': upgrades.description,
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'subsubmenu': subsubmenu,
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'is_busy': is_busy,
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'log': get_log()})
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