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When a hostname is set or changed, expose <hostname>.local as a domain. With this, daemons can configure themselves to work properly with .local domains. Cockpit is an example of a daemon that can be configured to allow connections from .local domains Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org> Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
128 lines
4.2 KiB
Python
128 lines
4.2 KiB
Python
#
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# This file is part of FreedomBox.
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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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FreedomBox app for service discovery.
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"""
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from django.utils.translation import ugettext_lazy as _
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from plinth import actions
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from plinth import app as app_module
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from plinth import cfg, menu
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from plinth.daemon import Daemon
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from plinth.modules.config import get_hostname
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from plinth.modules.firewall.components import Firewall
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from plinth.modules.names.components import DomainType
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from plinth.signals import domain_added, domain_removed, post_hostname_change
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from plinth.utils import format_lazy
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from plinth.views import AppView
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from .manifest import backup # noqa, pylint: disable=unused-import
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# pylint: disable=C0103
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version = 1
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is_essential = True
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managed_services = ['avahi-daemon']
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managed_packages = ['avahi-daemon', 'avahi-utils']
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name = _('Service Discovery')
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description = [
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format_lazy(
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_('Service discovery allows other devices on the network to '
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'discover your {box_name} and services running on it. It '
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'also allows {box_name} to discover other devices and '
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'services running on your local network. Service discovery is '
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'not essential and works only on internal networks. It may be '
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'disabled to improve security especially when connecting to a '
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'hostile local network.'), box_name=_(cfg.box_name))
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]
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manual_page = 'ServiceDiscovery'
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app = None
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class AvahiApp(app_module.App):
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"""FreedomBox app for Avahi."""
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app_id = 'avahi'
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def __init__(self):
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"""Create components for the app."""
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super().__init__()
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menu_item = menu.Menu('menu-avahi', name, None, 'fa-compass',
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'avahi:index', parent_url_name='system')
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self.add(menu_item)
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domain_type = DomainType('domain-type-local',
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_('Local Network Domain'), 'config:index',
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can_have_certificate=False)
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self.add(domain_type)
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firewall = Firewall('firewall-avahi', name, ports=['mdns'],
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is_external=False)
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self.add(firewall)
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daemon = Daemon('daemon-avahi', managed_services[0])
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self.add(daemon)
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def init():
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"""Initialize the service discovery module."""
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global app
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app = AvahiApp()
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if app.is_enabled():
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domain_added.send_robust(
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sender='avahi', domain_type='domain-type-local',
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name=get_hostname() + '.local', services='__all__')
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app.set_enabled(True)
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post_hostname_change.connect(on_post_hostname_change)
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def setup(helper, old_version=None):
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"""Install and configure the module."""
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helper.install(managed_packages)
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# Reload avahi-daemon now that first-run does not reboot. After performing
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# FreedomBox Service (Plinth) package installation, new Avahi files will be
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# available and require restart.
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helper.call('post', actions.superuser_run, 'service',
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['reload', 'avahi-daemon'])
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def on_post_hostname_change(sender, old_hostname, new_hostname, **kwargs):
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"""Update .local domain after hostname change."""
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del sender # Unused
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del kwargs # Unused
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domain_removed.send_robust(sender='avahi', domain_type='domain-type-local',
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name=old_hostname + '.local')
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domain_added.send_robust(sender='avahi', domain_type='domain-type-local',
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name=new_hostname + '.local', services='__all__')
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class AvahiAppView(AppView):
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app_id = 'avahi'
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name = name
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description = description
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manual_page = manual_page
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