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# 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

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