# UpdateManager.py
# -*- Mode: Python; indent-tabs-mode: nil; tab-width: 4; coding: utf-8 -*-
#
# Copyright (c) 2012 Canonical
#
# Author: Michael Terry <michael.terry@canonical.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
from __future__ import absolute_import, print_function
from gi.repository import Gtk
from gi.repository import Gdk, GdkX11
from gi.repository import Gio
from gi.repository import GLib
from gi.repository import GObject
GdkX11 # pyflakes
import warnings
warnings.filterwarnings("ignore", "Accessed deprecated property",
DeprecationWarning)
import distro_info
import fnmatch
import os
import subprocess
import sys
import time
from gettext import gettext as _
import dbus
import dbus.service
from dbus.mainloop.glib import DBusGMainLoop
DBusGMainLoop(set_as_default=True)
from .UnitySupport import UnitySupport
from .Dialogs import (DistUpgradeDialog,
ErrorDialog,
HWEUpgradeDialog,
NeedRestartDialog,
NoUpdatesDialog,
NoUpgradeForYouDialog,
PartialUpgradeDialog,
StoppedUpdatesDialog,
UnsupportedDialog,
UpdateErrorDialog)
from .MetaReleaseGObject import MetaRelease
from .UpdatesAvailable import UpdatesAvailable
from .Core.AlertWatcher import AlertWatcher
from .Core.MyCache import MyCache
from .Core.roam import NetworkManagerHelper
from .Core.UpdateList import UpdateList
from .Core.utils import get_arch, get_dist
from .backend import (InstallBackend,
get_backend)
# file that signals if we need to reboot
REBOOT_REQUIRED_FILE = "/var/run/reboot-required"
class UpdateManager(Gtk.Window):
""" This class is the main window and work flow controller. The main
window will show panes, and it will morph between them. """
def __init__(self, datadir, options):
Gtk.Window.__init__(self)
# Public members
self.datadir = datadir
self.options = options
self.unity = UnitySupport()
self.controller = None
self.cache = None
self.update_list = None
self.meta_release = None
self.hwe_replacement_packages = None
self.oem_metapackages = set()
self.duplicate_packages = []
self.arch = get_arch()
# Basic GTK+ parameters
self.set_title(_("Software Updater"))
self.set_icon_name("system-software-update")
self.set_position(Gtk.WindowPosition.CENTER)
# Keep window at a constant size
ctx = self.get_style_context()
self.style_changed = ctx.connect("changed",
lambda ctx:
self.resize_to_standard_width())
# Signals
self.connect("delete-event", self._on_close)
self._setup_dbus()
# deal with no-focus-on-map
if self.options and self.options.no_focus_on_map:
self.set_focus_on_map(False)
self.iconify()
self.stick()
self.set_urgency_hint(True)
self.unity.set_urgency(True)
self.initial_focus_id = self.connect(
"focus-in-event", self.on_initial_focus_in)
# Look for a new release in a thread
self.meta_release = MetaRelease(
self.options and self.options.devel_release,
self.options and self.options.use_proposed)
def begin_user_resizable(self, stored_width=0, stored_height=0):
self.set_resizable(True)
if stored_width > 0 and stored_height > 0:
# There is a race here. If we immediately resize, it often doesn't
# take. Using idle_add helps, but we *still* occasionally don't
# restore the size correctly. Help needed to track this down!
GLib.idle_add(lambda: self.resize(stored_width, stored_height))
def end_user_resizable(self):
self.set_resizable(False)
def resize_to_standard_width(self):
if self.get_resizable():
return # only size to a specific em if we are a static size
num_em = 33 # per SoftwareUpdates spec
dpi = self.get_screen().get_resolution()
if dpi <= 0:
dpi = 96
ctx = self.get_style_context()
GObject.signal_handler_block(ctx, self.style_changed)
size = ctx.get_property("font-size", Gtk.StateFlags.NORMAL)
width = dpi / 72 * size * num_em
self.set_size_request(width, -1)
GObject.signal_handler_unblock(ctx, self.style_changed)
def on_initial_focus_in(self, widget, event):
"""callback run on initial focus-in (if started unmapped)"""
self.unstick()
self.set_urgency_hint(False)
self.unity.set_urgency(False)
self.disconnect(self.initial_focus_id)
return False
def _start_pane(self, pane):
if self.controller is not None:
self.controller.stop()
if isinstance(self.controller, Gtk.Widget):
self.controller.destroy()
self.controller = pane
self._look_ready()
self.end_user_resizable()
if pane is None:
return
if isinstance(pane, Gtk.Widget):
self.add(pane)
pane.start()
self.show_all()
else:
pane.start()
self.hide()
def _on_close(self, widget, data=None):
return self.close()
def close(self):
if not self.get_sensitive():
return True
if self.controller:
controller_close = self.controller.close()
if controller_close:
return controller_close
self.exit()
def exit(self):
""" exit the application, save the state """
self._start_pane(None)
sys.exit(0)
def show_settings(self):
cmd = ["/usr/bin/software-properties-gtk",
"--open-tab", "2"]
if "WAYLAND_DISPLAY" not in os.environ:
cmd += ["--toplevel", "%s" % self.get_window().get_xid()]
self._look_busy()
try:
p = subprocess.Popen(cmd)
except OSError:
pass
else:
while p.poll() is None:
while Gtk.events_pending():
Gtk.main_iteration()
time.sleep(0.05)
finally:
self.start_available()
def start_update(self):
if self.options.no_update:
self.start_available()
return
update_backend = get_backend(self, InstallBackend.ACTION_UPDATE)
self._start_pane(update_backend)
def start_install(self, hwe_upgrade=False):
install_backend = get_backend(self, InstallBackend.ACTION_PRE_INSTALL)
if hwe_upgrade:
for pkgname in self.hwe_replacement_packages:
try:
self.cache[pkgname].mark_install()
except SystemError:
pass
self._start_pane(install_backend)
def start_available(self, cancelled_update=False, error_occurred=False):
self._look_busy()
self.refresh_cache()
if self.cache is None:
return
pane = self._make_available_pane(self.cache.install_count
+ self.cache.del_count,
os.path.exists(REBOOT_REQUIRED_FILE),
cancelled_update, error_occurred)
self._start_pane(pane)
def _check_oem_metapackages(self):
di = distro_info.UbuntuDistroInfo()
codename = get_dist()
lts = di.is_lts(codename)
if not lts:
return None
OEM_PATH = os.path.join(GLib.get_user_runtime_dir(),
"ubuntu-drivers-oem.package-list")
if not os.path.exists(OEM_PATH):
return None
# Packages that aren't installed but apply to this system
with open(OEM_PATH, 'r') as f:
self.oem_metapackages |= set(f.read().splitlines())
# Packages that are already installed
for pkg in self.cache:
if fnmatch.fnmatch(pkg.name, 'oem-*-meta') \
and pkg.installed:
self.oem_metapackages.add(pkg)
def _make_available_pane(self, install_count, need_reboot=False,
cancelled_update=False, error_occurred=False):
self._check_hwe_support_status()
if install_count == 0:
# Need Restart > New Release > No Updates
if need_reboot:
return NeedRestartDialog(self)
dist_upgrade = self._check_meta_release()
if dist_upgrade:
return dist_upgrade
elif cancelled_update:
return StoppedUpdatesDialog(self)
elif self.hwe_replacement_packages:
return HWEUpgradeDialog(self)
else:
return NoUpdatesDialog(self, error_occurred=error_occurred)
else:
header = None
desc = None
if error_occurred:
desc = _("Some software couldn’t be checked for updates.")
elif cancelled_update:
header = _("You stopped the check for updates.")
desc = _("Updated software is available from "
"a previous check.")
# Display HWE updates first as an old HWE stack is vulnerable
elif self.hwe_replacement_packages:
return HWEUpgradeDialog(self)
return UpdatesAvailable(self, header, desc, need_reboot)
def start_error(self, update_and_retry, header, desc):
if update_and_retry:
self._start_pane(UpdateErrorDialog(self, header, desc))
else:
self._start_pane(ErrorDialog(self, header, desc))
def _look_busy(self):
self.set_sensitive(False)
if self.get_window() is not None:
self.get_window().set_cursor(Gdk.Cursor.new(Gdk.CursorType.WATCH))
def _look_ready(self):
self.set_sensitive(True)
if self.get_window() is not None:
self.get_window().set_cursor(None)
self.get_window().set_functions(Gdk.WMFunction.ALL)
def _check_meta_release(self):
if self.meta_release is None:
return None
if self.meta_release.downloading:
# Block until we get an answer
GLib.idle_add(self._meta_release_wait_idle)
Gtk.main()
# Check if there is anything to upgrade to or a known-broken upgrade
next = self.meta_release.upgradable_to
if not next or next.upgrade_broken:
return None
# Check for end-of-life
if self.meta_release.no_longer_supported:
return UnsupportedDialog(self, self.meta_release)
# Check for new fresh release
settings = Gio.Settings.new("com.ubuntu.update-manager")
if (self.meta_release.new_dist
and (self.options.check_dist_upgrades
or settings.get_boolean("check-dist-upgrades"))):
if self.arch == 'i386':
return NoUpgradeForYouDialog(self, self.meta_release,
self.arch)
return DistUpgradeDialog(self, self.meta_release)
return None
def _meta_release_wait_idle(self):
# 'downloading' is changed in a thread, but the signal
# 'done_downloading' is done in our thread's event loop. So we know
# that it won't fire while we're in this function.
if not self.meta_release.downloading:
Gtk.main_quit()
else:
self.meta_release.connect("done_downloading", Gtk.main_quit)
return False
def _check_hwe_support_status(self):
di = distro_info.UbuntuDistroInfo()
codename = get_dist()
lts = di.is_lts(codename)
if not lts:
return None
HWE = "/usr/bin/hwe-support-status"
if not os.path.exists(HWE):
return None
cmd = [HWE, "--show-replacements"]
self._parse_hwe_support_status(cmd)
def _parse_hwe_support_status(self, cmd):
try:
subprocess.check_output(cmd)
# for debugging
# print("nothing unsupported running")
except subprocess.CalledProcessError as e:
if e.returncode == 10:
packages = e.output.strip().split()
self.hwe_replacement_packages = []
for pkgname in packages:
pkgname = pkgname.decode('utf-8')
if pkgname in self.cache and \
not self.cache[pkgname].is_installed:
self.hwe_replacement_packages.append(pkgname)
# for debugging
# print(self.hwe_replacement_packages)
# fixme: we should probably abstract away all the stuff from libapt
def refresh_cache(self):
try:
if self.cache is None:
self.cache = MyCache(None)
else:
self.cache.open(None)
self.cache._initDepCache()
except AssertionError:
# if the cache could not be opened for some reason,
# let the release upgrader handle it, it deals
# a lot better with this
self._start_pane(PartialUpgradeDialog(self))
# we assert a clean cache
header = _("Software index is broken")
desc = _("It is impossible to install or remove any software. "
"Please use the package manager \"Synaptic\" or run "
"\"sudo apt-get install -f\" in a terminal to fix "
"this issue at first.")
self.start_error(False, header, desc)
return
except SystemError as e:
header = _("Could not initialize the package information")
desc = _("An unresolvable problem occurred while "
"initializing the package information.\n\n"
"Please report this bug against the 'update-manager' "
"package and include the following error "
"message:\n") + str(e)
self.start_error(False, header, desc)
return
# Let the Gtk event loop breath if it hasn't had a chance.
def iterate():
while Gtk.events_pending():
Gtk.main_iteration()
iterate()
self._check_oem_metapackages()
for pkgname in self.oem_metapackages:
try:
if not self.cache[pkgname].is_installed:
self.cache[pkgname].mark_install()
except SystemError:
pass
self.update_list = UpdateList(self)
try:
self.update_list.update(self.cache, eventloop_callback=iterate,
duplicate_packages=self.duplicate_packages)
except SystemError as e:
header = _("Could not calculate the upgrade")
desc = _("An unresolvable problem occurred while "
"calculating the upgrade.\n\n"
"Please report this bug against the 'update-manager' "
"package and include the following error "
"message:\n") + str(e)
self.start_error(True, header, desc)
if self.update_list.distUpgradeWouldDelete > 0:
self._start_pane(PartialUpgradeDialog(self))
def _setup_dbus(self):
""" this sets up a dbus listener if none is installed already """
# check if there is another g-a-i already and if not setup one
# listening on dbus
try:
bus = dbus.SessionBus()
except Exception:
print("warning: could not initiate dbus")
return
try:
proxy_obj = bus.get_object('org.freedesktop.UpdateManager',
'/org/freedesktop/UpdateManagerObject')
iface = dbus.Interface(proxy_obj,
'org.freedesktop.UpdateManagerIFace')
iface.bringToFront()
#print("send bringToFront")
sys.exit(0)
except dbus.DBusException:
#print("no listening object (%s) " % e)
bus_name = dbus.service.BusName('org.freedesktop.UpdateManager',
bus)
self.dbusController = UpdateManagerDbusController(self, bus_name)
class UpdateManagerDbusController(dbus.service.Object):
""" this is a helper to provide the UpdateManagerIFace """
def __init__(self, parent, bus_name,
object_path='/org/freedesktop/UpdateManagerObject'):
dbus.service.Object.__init__(self, bus_name, object_path)
self.parent = parent
self.alert_watcher = AlertWatcher()
self.alert_watcher.connect("network-alert", self._on_network_alert)
self.connected = False
@dbus.service.method('org.freedesktop.UpdateManagerIFace')
def bringToFront(self):
self.parent.present()
return True
@dbus.service.method('org.freedesktop.UpdateManagerIFace')
def upgrade(self):
try:
self.parent.start_install()
return True
except Exception:
return False
def _on_network_alert(self, watcher, state):
if state in NetworkManagerHelper.NM_STATE_CONNECTED_LIST:
self.connected = True
else:
self.connected = False