2015-08-18 16:29:56 +00:00
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# Copyright 2015 Canonical, Ltd.
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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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2016-11-07 02:03:27 +00:00
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from functools import partial
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2015-10-22 21:12:59 +00:00
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import logging
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2016-08-19 03:33:22 +00:00
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import os
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2016-10-19 22:56:29 +00:00
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import random
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2016-08-30 01:56:42 +00:00
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import select
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2016-11-07 03:34:43 +00:00
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import socket
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2016-08-13 02:31:31 +00:00
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import yaml
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2017-09-28 15:51:32 +00:00
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from probert.network import IFF_UP, NetworkEventReceiver
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2016-11-07 02:03:27 +00:00
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2018-02-26 09:14:43 +00:00
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from subiquitycore.models.network import sanitize_config
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2018-05-20 23:52:06 +00:00
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from subiquitycore.tasksequence import (
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BackgroundTask,
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BackgroundProcess,
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CancelableTask,
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PythonSleep,
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TaskSequence,
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TaskWatcher,
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)
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2016-06-30 18:17:01 +00:00
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from subiquitycore.ui.views import (NetworkView,
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NetworkSetDefaultRouteView,
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NetworkBondInterfacesView,
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NetworkConfigureInterfaceView,
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2016-09-05 00:03:06 +00:00
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NetworkConfigureIPv4InterfaceView,
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2016-12-12 02:45:45 +00:00
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NetworkConfigureIPv6InterfaceView,
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2016-09-05 03:36:59 +00:00
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NetworkConfigureWLANView)
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2016-08-22 04:46:56 +00:00
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from subiquitycore.ui.views.network import ApplyingConfigWidget
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2016-06-30 18:17:01 +00:00
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from subiquitycore.ui.dummy import DummyView
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2017-04-04 04:20:56 +00:00
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from subiquitycore.controller import BaseController
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2018-05-20 23:52:06 +00:00
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from subiquitycore.utils import run_command
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2015-09-10 18:25:54 +00:00
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2016-06-30 18:17:01 +00:00
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log = logging.getLogger("subiquitycore.controller.network")
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2015-08-18 16:29:56 +00:00
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2015-11-02 22:48:37 +00:00
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2017-09-28 15:51:32 +00:00
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class DownNetworkDevices(BackgroundTask):
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def __init__(self, rtlistener, devs_to_down):
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self.rtlistener = rtlistener
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self.devs_to_down = devs_to_down
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def __repr__(self):
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2018-05-21 20:51:58 +00:00
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return 'DownNetworkDevices(%s)' % ([dev.name for dev in
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self.devs_to_down],)
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2017-09-28 15:51:32 +00:00
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def start(self):
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for dev in self.devs_to_down:
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try:
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log.debug('downing %s', dev.name)
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self.rtlistener.unset_link_flags(dev.ifindex, IFF_UP)
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except RuntimeError:
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# We don't actually care very much about this
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log.exception('unset_link_flags failed for %s', dev.name)
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2018-05-18 00:23:09 +00:00
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def _bg_run(self):
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2017-09-28 15:51:32 +00:00
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return True
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def end(self, observer, fut):
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if fut.result():
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observer.task_succeeded()
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else:
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observer.task_failed()
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2018-05-20 23:52:06 +00:00
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class WaitForDefaultRouteTask(CancelableTask):
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2016-08-30 02:08:42 +00:00
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2017-11-15 01:27:24 +00:00
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def __init__(self, timeout, event_receiver):
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2016-08-30 02:08:42 +00:00
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self.timeout = timeout
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2017-11-15 01:27:24 +00:00
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self.event_receiver = event_receiver
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2016-08-30 02:08:42 +00:00
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def __repr__(self):
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2018-05-21 20:51:58 +00:00
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return 'WaitForDefaultRouteTask(%r)' % (self.timeout,)
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2016-08-30 02:08:42 +00:00
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2016-11-07 02:03:27 +00:00
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def got_route(self):
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os.write(self.success_w, b'x')
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2017-01-17 23:01:59 +00:00
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def start(self):
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self.fail_r, self.fail_w = os.pipe()
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self.success_r, self.success_w = os.pipe()
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2017-11-15 01:27:24 +00:00
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self.event_receiver.add_default_route_waiter(self.got_route)
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2017-01-17 23:01:59 +00:00
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2018-05-18 00:23:09 +00:00
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def _bg_run(self):
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2016-08-30 02:08:42 +00:00
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try:
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2018-05-21 20:51:58 +00:00
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r, _, _ = select.select([self.fail_r, self.success_r], [], [],
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self.timeout)
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2017-01-17 23:01:59 +00:00
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return self.success_r in r
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2016-08-30 02:08:42 +00:00
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finally:
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2016-11-07 02:03:27 +00:00
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os.close(self.fail_r)
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os.close(self.fail_w)
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os.close(self.success_r)
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os.close(self.success_w)
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2016-08-30 02:08:42 +00:00
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2017-01-17 23:01:59 +00:00
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def end(self, observer, fut):
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if fut.result():
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observer.task_succeeded()
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2017-03-21 00:38:35 +00:00
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else:
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observer.task_failed('timeout')
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2017-01-17 23:01:59 +00:00
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2016-08-30 02:08:42 +00:00
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def cancel(self):
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2016-11-07 02:03:27 +00:00
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os.write(self.fail_w, b'x')
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2016-08-30 02:08:42 +00:00
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2017-11-15 01:27:24 +00:00
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class SubiquityNetworkEventReceiver(NetworkEventReceiver):
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def __init__(self, model):
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2016-11-07 02:03:27 +00:00
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self.model = model
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self.default_route_waiter = None
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self.default_routes = set()
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def new_link(self, ifindex, link):
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self.model.new_link(ifindex, link)
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def del_link(self, ifindex):
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self.model.del_link(ifindex)
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if ifindex in self.default_routes:
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self.default_routes.remove(ifindex)
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def update_link(self, ifindex):
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self.model.update_link(ifindex)
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def route_change(self, action, data):
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2017-09-28 19:23:07 +00:00
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super().route_change(action, data)
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2017-11-26 20:54:11 +00:00
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if data['dst'] != 'default':
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2016-11-07 02:03:27 +00:00
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return
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if data['table'] != 254:
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return
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ifindex = data['ifindex']
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2017-09-28 19:54:14 +00:00
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if action == "NEW" or action == "CHANGE":
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2016-11-07 02:03:27 +00:00
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self.default_routes.add(ifindex)
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if self.default_route_waiter:
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self.default_route_waiter()
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elif action == "DEL" and ifindex in self.default_routes:
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self.default_routes.remove(ifindex)
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log.debug('default routes %s', self.default_routes)
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def add_default_route_waiter(self, waiter):
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if self.default_routes:
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waiter()
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else:
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self.default_route_waiter = waiter
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2016-10-25 22:02:23 +00:00
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2016-11-07 00:35:42 +00:00
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default_netplan = '''
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network:
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version: 2
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ethernets:
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"en*":
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addresses:
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- 10.0.2.15/24
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gateway4: 10.0.2.2
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nameservers:
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addresses:
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- 8.8.8.8
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- 8.4.8.4
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search:
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- foo
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- bar
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"eth*":
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dhcp4: true
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2016-11-08 23:21:06 +00:00
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wifis:
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"wl*":
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dhcp4: true
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access-points:
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"some-ap":
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password: password
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2016-11-07 00:35:42 +00:00
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'''
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2018-05-21 20:51:58 +00:00
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2018-05-20 23:52:06 +00:00
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class NetworkController(BaseController, TaskWatcher):
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2016-09-27 03:26:04 +00:00
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signals = [
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('menu:network:main:set-default-v4-route', 'set_default_v4_route'),
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('menu:network:main:set-default-v6-route', 'set_default_v6_route'),
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]
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2016-11-07 00:35:42 +00:00
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root = "/"
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2015-08-31 15:55:46 +00:00
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def __init__(self, common):
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super().__init__(common)
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2017-11-14 21:30:09 +00:00
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self.model = self.base_model.network
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2017-11-16 00:29:22 +00:00
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self.answers = self.all_answers.get("Network", {})
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2016-11-07 00:35:42 +00:00
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if self.opts.dry_run:
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2017-03-16 09:52:05 +00:00
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self.root = os.path.abspath(".subiquity")
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2016-11-07 00:35:42 +00:00
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self.tried_once = False
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2017-03-16 09:52:05 +00:00
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netplan_path = self.netplan_path
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netplan_dir = os.path.dirname(netplan_path)
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if os.path.exists(netplan_dir):
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import shutil
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shutil.rmtree(netplan_dir)
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2017-03-20 01:53:10 +00:00
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os.makedirs(netplan_dir)
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2017-03-16 09:52:05 +00:00
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with open(netplan_path, 'w') as fp:
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2016-11-07 00:35:42 +00:00
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fp.write(default_netplan)
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2017-11-14 21:30:09 +00:00
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self.model.parse_netplan_configs(self.root)
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2016-11-07 02:03:27 +00:00
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2017-11-15 01:27:24 +00:00
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self.network_event_receiver = SubiquityNetworkEventReceiver(self.model)
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2018-05-21 20:51:58 +00:00
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self.observer, fds = (
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self.prober.probe_network(self.network_event_receiver))
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2017-11-15 01:27:24 +00:00
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for fd in fds:
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self.loop.watch_file(fd, partial(self._data_ready, fd))
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def _data_ready(self, fd):
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2018-05-18 01:11:15 +00:00
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cp = run_command(['udevadm', 'settle', '-t', '0'])
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if cp.returncode != 0:
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2017-11-15 01:27:24 +00:00
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log.debug("waiting 0.1 to let udev event queue settle")
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2018-05-21 20:51:58 +00:00
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self.loop.set_alarm_in(0.1, lambda loop, ud: self._data_ready(fd))
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2017-11-15 01:27:24 +00:00
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return
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self.observer.data_ready(fd)
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v = self.ui.frame.body
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if hasattr(v, 'refresh_model_inputs'):
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v.refresh_model_inputs()
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2016-11-07 02:03:27 +00:00
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2016-11-07 03:25:18 +00:00
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def start_scan(self, dev):
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2017-11-15 01:27:24 +00:00
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self.observer.trigger_scan(dev.ifindex)
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2016-11-07 03:25:18 +00:00
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2016-11-07 02:03:27 +00:00
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def cancel(self):
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2017-04-04 04:20:56 +00:00
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self.signal.emit_signal('prev-screen')
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2016-11-07 02:03:27 +00:00
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def default(self):
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2016-10-05 02:11:32 +00:00
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self.ui.set_body(NetworkView(self.model, self))
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2017-11-16 00:29:22 +00:00
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if self.answers.get('accept-default', False):
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self.network_finish(self.model.render())
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2015-08-18 16:29:56 +00:00
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2017-03-16 09:52:05 +00:00
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@property
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def netplan_path(self):
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if self.opts.project == "subiquity":
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netplan_config_file_name = '00-installer-config.yaml'
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else:
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netplan_config_file_name = '00-snapd-config.yaml'
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return os.path.join(self.root, 'etc/netplan', netplan_config_file_name)
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2016-08-13 02:31:31 +00:00
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def network_finish(self, config):
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2018-05-21 20:51:58 +00:00
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log.debug("network config: \n%s",
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yaml.dump(sanitize_config(config), default_flow_style=False))
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2016-08-16 19:25:58 +00:00
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2017-03-16 09:52:05 +00:00
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netplan_path = self.netplan_path
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2016-11-07 00:35:42 +00:00
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while True:
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try:
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tmppath = '%s.%s' % (netplan_path, random.randrange(0, 1000))
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2018-05-21 20:51:58 +00:00
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fd = os.open(tmppath,
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os.O_WRONLY | os.O_EXCL | os.O_CREAT, 0o0600)
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2016-11-07 00:35:42 +00:00
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except FileExistsError:
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continue
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2016-08-19 03:16:24 +00:00
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else:
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2016-11-07 00:35:42 +00:00
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break
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w = os.fdopen(fd, 'w')
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with w:
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2018-05-21 20:51:58 +00:00
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w.write("# This is the network config written by "
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"'%s'\n" % (self.opts.project))
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2016-11-07 00:35:42 +00:00
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w.write(yaml.dump(config))
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os.rename(tmppath, netplan_path)
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2017-11-14 21:30:09 +00:00
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self.model.parse_netplan_configs(self.root)
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2016-11-07 00:35:42 +00:00
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if self.opts.dry_run:
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tasks = [
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('one', BackgroundProcess(['sleep', '0.1'])),
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('two', PythonSleep(0.1)),
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('three', BackgroundProcess(['sleep', '0.1'])),
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]
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if os.path.exists('/lib/netplan/generate'):
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# If netplan appears to be installed, run generate to at
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# least test that what we wrote is acceptable to netplan.
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2018-05-21 20:51:58 +00:00
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tasks.append(('generate',
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BackgroundProcess(['netplan', 'generate',
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'--root', self.root])))
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2016-11-07 00:35:42 +00:00
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if not self.tried_once:
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2018-05-21 20:51:58 +00:00
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tasks.append(
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('timeout',
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WaitForDefaultRouteTask(3, self.network_event_receiver))
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)
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2016-11-07 00:35:42 +00:00
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tasks.append(('fail', BackgroundProcess(['false'])))
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2016-08-19 03:16:24 +00:00
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self.tried_once = True
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2016-08-13 02:31:31 +00:00
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else:
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2017-09-28 15:51:32 +00:00
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devs_to_down = []
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for dev in self.model.get_all_netdevs():
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2018-05-21 20:51:58 +00:00
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devcfg = self.model.config.config_for_device(dev._net_info)
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if dev._configuration != devcfg:
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2017-09-28 15:51:32 +00:00
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devs_to_down.append(dev)
|
|
|
|
tasks = []
|
|
|
|
if devs_to_down:
|
2018-05-03 22:31:36 +00:00
|
|
|
tasks.extend([
|
2018-05-21 20:51:58 +00:00
|
|
|
('stop-networkd',
|
|
|
|
BackgroundProcess(['systemctl',
|
|
|
|
'stop', 'systemd-networkd.service'])),
|
|
|
|
('down',
|
|
|
|
DownNetworkDevices(self.observer.rtlistener,
|
|
|
|
devs_to_down)),
|
2017-09-28 15:51:32 +00:00
|
|
|
])
|
2018-05-03 22:31:36 +00:00
|
|
|
tasks.extend([
|
2016-08-30 01:49:04 +00:00
|
|
|
('apply', BackgroundProcess(['netplan', 'apply'])),
|
2018-05-21 20:51:58 +00:00
|
|
|
('timeout',
|
|
|
|
WaitForDefaultRouteTask(30, self.network_event_receiver)),
|
2017-09-28 15:51:32 +00:00
|
|
|
])
|
2016-08-22 04:46:56 +00:00
|
|
|
|
2016-08-22 04:59:09 +00:00
|
|
|
def cancel():
|
|
|
|
self.cs.cancel()
|
2016-08-30 01:49:04 +00:00
|
|
|
self.task_error('canceled')
|
|
|
|
self.acw = ApplyingConfigWidget(len(tasks), cancel)
|
2017-10-25 08:27:31 +00:00
|
|
|
self.ui.frame.body.show_overlay(self.acw, min_width=60)
|
2016-08-22 04:59:09 +00:00
|
|
|
|
2017-01-17 23:01:59 +00:00
|
|
|
self.cs = TaskSequence(self.run_in_bg, tasks, self)
|
2016-08-22 04:59:09 +00:00
|
|
|
self.cs.run()
|
|
|
|
|
2016-08-30 01:49:04 +00:00
|
|
|
def task_complete(self, stage):
|
2016-08-22 04:59:09 +00:00
|
|
|
self.acw.advance()
|
|
|
|
|
2016-11-07 21:39:54 +00:00
|
|
|
def task_error(self, stage, info=None):
|
2017-01-06 07:44:35 +00:00
|
|
|
self.ui.frame.body.remove_overlay()
|
2016-11-07 21:39:54 +00:00
|
|
|
self.ui.frame.body.show_network_error(stage, info)
|
2017-11-16 00:29:22 +00:00
|
|
|
if self.answers.get('accept-default', False):
|
|
|
|
self.network_finish(self.model.render())
|
2016-08-22 04:59:09 +00:00
|
|
|
|
2016-08-30 01:49:04 +00:00
|
|
|
def tasks_finished(self):
|
2017-03-16 09:52:05 +00:00
|
|
|
self.signal.emit_signal('network-config-written', self.netplan_path)
|
2018-05-18 00:20:01 +00:00
|
|
|
self.signal.emit_signal('next-screen')
|
2015-09-10 18:25:54 +00:00
|
|
|
|
2016-08-16 16:59:19 +00:00
|
|
|
def set_default_v4_route(self):
|
2018-05-21 20:51:58 +00:00
|
|
|
self.ui.set_header("Default route")
|
|
|
|
self.ui.set_body(
|
|
|
|
NetworkSetDefaultRouteView(self.model, socket.AF_INET, self))
|
2016-08-16 16:59:19 +00:00
|
|
|
|
|
|
|
def set_default_v6_route(self):
|
2018-05-21 20:51:58 +00:00
|
|
|
self.ui.set_header("Default route")
|
|
|
|
self.ui.set_body(
|
|
|
|
NetworkSetDefaultRouteView(self.model, socket.AF_INET6, self))
|
2015-08-18 16:29:56 +00:00
|
|
|
|
2015-11-09 20:35:54 +00:00
|
|
|
def bond_interfaces(self):
|
2016-10-05 02:11:32 +00:00
|
|
|
self.ui.set_body(NetworkBondInterfacesView(self.model, self))
|
2015-11-09 20:35:54 +00:00
|
|
|
|
2015-10-08 22:10:54 +00:00
|
|
|
def network_configure_interface(self, iface):
|
2018-05-21 20:51:58 +00:00
|
|
|
self.ui.set_header(_("Network interface {}").format(iface))
|
|
|
|
self.ui.set_footer("")
|
|
|
|
self.ui.set_body(
|
|
|
|
NetworkConfigureInterfaceView(self.model, self, iface))
|
2015-10-08 22:10:54 +00:00
|
|
|
|
|
|
|
def network_configure_ipv4_interface(self, iface):
|
2018-05-21 20:51:58 +00:00
|
|
|
self.ui.set_header(_(
|
|
|
|
"Network interface {} manual IPv4 configuration").format(iface))
|
|
|
|
self.ui.set_footer("")
|
|
|
|
self.ui.set_body(
|
|
|
|
NetworkConfigureIPv4InterfaceView(self.model, self, iface))
|
2015-10-08 22:10:54 +00:00
|
|
|
|
2016-09-05 03:36:59 +00:00
|
|
|
def network_configure_wlan_interface(self, iface):
|
2018-05-21 20:51:58 +00:00
|
|
|
self.ui.set_header(_(
|
|
|
|
"Network interface {} WIFI configuration").format(iface))
|
|
|
|
self.ui.set_footer("")
|
2016-10-05 02:11:32 +00:00
|
|
|
self.ui.set_body(NetworkConfigureWLANView(self.model, self, iface))
|
2016-09-05 03:36:59 +00:00
|
|
|
|
2015-10-08 22:10:54 +00:00
|
|
|
def network_configure_ipv6_interface(self, iface):
|
2018-05-21 20:51:58 +00:00
|
|
|
self.ui.set_header(_(
|
|
|
|
"Network interface {} manual IPv6 configuration").format(iface))
|
|
|
|
self.ui.set_footer("")
|
|
|
|
self.ui.set_body(
|
|
|
|
NetworkConfigureIPv6InterfaceView(self.model, self, iface))
|
2015-10-08 22:10:54 +00:00
|
|
|
|
2015-08-18 16:29:56 +00:00
|
|
|
def install_network_driver(self):
|
2016-10-05 02:11:32 +00:00
|
|
|
self.ui.set_body(DummyView(self))
|