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File Name : UpdateList.py

# UpdateList.py
# -*- Mode: Python; indent-tabs-mode: nil; tab-width: 4; coding: utf-8 -*-
#
#  Copyright (c) 2004-2013 Canonical
#
#  Author: Michael Vogt <mvo@debian.org>
#          Dylan McCall <dylanmccall@ubuntu.com>
#          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 print_function

import warnings
warnings.filterwarnings("ignore", "Accessed deprecated property",
                        DeprecationWarning)

from gettext import gettext as _
import apt
import fnmatch
import logging
import itertools
import os
import random
import glob
import re

from gi.repository import Gio

from UpdateManager.Core import utils

class UpdateItem():
    def __init__(self, pkg, name, icon, to_remove, sensitive=True):
        self.icon = icon
        self.name = name
        self.pkg = pkg
        self.to_remove = to_remove
        self.sensitive = sensitive

def is_selected(self):
        if not self.to_remove:
            return self.pkg.marked_install or self.pkg.marked_upgrade
        else:
            return self.pkg.marked_delete

class UpdateGroup(UpdateItem):
    _depcache = {}

def __init__(self, pkg, name, icon, to_remove, sensitive=True):
        UpdateItem.__init__(self, pkg, name, icon, to_remove, sensitive)
        self._items = set()
        self._deps = set()
        self.core_item = None
        if pkg is not None:
            self.core_item = UpdateItem(pkg, name, icon, to_remove, sensitive)
            self._items.add(self.core_item)

@property
    def items(self):
        all_items = []
        all_items.extend(self._items)
        return sorted(all_items, key=lambda a: a.name.lower())

def add(self, pkg, cache=None, eventloop_callback=None, to_remove=False,
            sensitive=True):
        name = utils.get_package_label(pkg)
        icon = Gio.ThemedIcon.new("package")
        self._items.add(UpdateItem(pkg, name, icon, to_remove, sensitive))
        # If the pkg is in self._deps, stop here. We have already calculated
        # the recursive dependencies for this package, no need to do it again.
        if cache and pkg.name in cache and pkg.name not in self._deps:
            if not self._deps:
                # Initial deps haven't been calculated. As we're checking
                # whether _deps is empty in is_dependency, we must init now or
                # it won't be done at all.
                self._init_deps(cache, eventloop_callback)
            self._add_deps(pkg, cache, eventloop_callback)

def contains(self, item):
        return item in self._items

def _init_deps(self, cache, eventloop_callback):
        for item in self._items:
            if item.pkg and item.pkg.name not in self._deps:
                self._add_deps(item.pkg, cache, eventloop_callback)

def _add_deps(self, pkg, cache, eventloop_callback):
        """Adds pkg and dependencies of pkg to the dependency list."""
        if pkg is None or pkg.candidate is None or pkg.name in self._deps:
            # This shouldn't really happen. If we land here often, it's a sign
            # that something has gone wrong. Unless all pkgs are None it's not
            # a critical issue - a hit to the performance at most.
            reason = ((not pkg or not pkg.candidate)
                      and "Package was None or didn't have a candidate."
                      or "%s already in _deps." % pkg.name)
            logging.debug("Useless call to _add_deps. %s" % reason)
            return
        if len(self._deps) % 200 == 0 and callable(eventloop_callback):
            # Don't spin the loop every time _add_deps is called.
            eventloop_callback()

self._deps.add(pkg.name)

if pkg.name in self._depcache:
            for dep in self._depcache[pkg.name]:
                if dep not in self._deps and dep in cache:
                    self._add_deps(cache[dep], cache, eventloop_callback)
        else:
            candidate = pkg.candidate
            dependencies = candidate.get_dependencies('Depends', 'Recommends')
            for dependency_pkg in itertools.chain.from_iterable(dependencies):
                name = dependency_pkg.name
                if name not in self._deps and name in cache:
                    self._depcache.setdefault(pkg.name, []).append(name)
                    self._add_deps(cache[name], cache, eventloop_callback)

def is_dependency(self, maybe_dep, cache=None, eventloop_callback=None):
        if not self._deps and cache:
            self._init_deps(cache, eventloop_callback)

return maybe_dep.name in self._deps

def packages_are_selected(self):
        for item in self.items:
            if item.is_selected():
                return True
        return False

def selection_is_inconsistent(self):
        pkgs_installing = [item for item in self.items if item.is_selected()]
        return (len(pkgs_installing) > 0
                and len(pkgs_installing) < len(self.items))

def get_total_size(self):
        if self.to_remove:
            return 0
        size = 0
        for item in self.items:
            size += getattr(item.pkg.candidate, "size", 0)
        return size

class UpdateApplicationGroup(UpdateGroup):
    def __init__(self, pkg, application, to_remove, sensitive=True):
        name = application.get_display_name()
        icon = application.get_icon()
        super(UpdateApplicationGroup, self).__init__(pkg, name, icon,
                                                     to_remove, sensitive)

class UpdatePackageGroup(UpdateGroup):
    def __init__(self, pkg, to_remove, sensitive=True):
        name = utils.get_package_label(pkg)
        icon = Gio.ThemedIcon.new("package")
        super(UpdatePackageGroup, self).__init__(pkg, name, icon, to_remove,
                                                 sensitive)

class UpdateSystemGroup(UpdateGroup):
    def __init__(self, cache, to_remove, sensitive=True):
        # Translators: the %s is a distro name, like 'Ubuntu' and 'base' as in
        # the core components and packages.
        name = _("%s base") % utils.get_ubuntu_flavor_name(cache=cache)
        icon = Gio.ThemedIcon.new("distributor-logo")
        super(UpdateSystemGroup, self).__init__(None, name, icon, to_remove,
                                                sensitive)

class UpdateOrigin():
    def __init__(self, desc, importance):
        self.packages = []
        self.importance = importance
        self.description = desc

class UpdateList():
    """
    class that contains the list of available updates in
    self.pkgs[origin] where origin is the user readable string
    """

# the key in the debian/control file used to add the phased
    # updates percentage
    PHASED_UPDATES_KEY = "Phased-Update-Percentage"

# the file that contains the uniq machine id
    UNIQ_MACHINE_ID_FILE = "/etc/machine-id"
    # use the dbus one as a fallback
    UNIQ_MACHINE_ID_FILE_FALLBACK = "/var/lib/dbus/machine-id"

APP_INSTALL_PATTERN = "/usr/share/app-install/desktop/%s:*.desktop"

# the configuration key to turn phased-updates always on
    ALWAYS_INCLUDE_PHASED_UPDATES = (
        "Update-Manager::Always-Include-Phased-Updates")
    # ... or always off
    NEVER_INCLUDE_PHASED_UPDATES = (
        "Update-Manager::Never-Include-Phased-Updates")

def __init__(self, parent, dist=None):
        self.dist = (dist if dist else utils.get_dist())
        self.distUpgradeWouldDelete = 0
        self.oem_groups = []
        self.update_groups = []
        self.security_groups = []
        self.kernel_autoremove_groups = []
        self.duplicate_groups = []
        self.ubuntu_pro_groups = []
        self.ubuntu_pro_fake_groups = []
        self.num_updates = 0
        self.random = random.Random()
        self.ignored_phased_updates = []
        # a stable machine uniq id
        try:
            with open(self.UNIQ_MACHINE_ID_FILE) as f:
                self.machine_uniq_id = f.read()
        except FileNotFoundError:
            with open(self.UNIQ_MACHINE_ID_FILE_FALLBACK) as f:
                self.machine_uniq_id = f.read()

if 'XDG_DATA_DIRS' in os.environ and os.environ['XDG_DATA_DIRS']:
            data_dirs = os.environ['XDG_DATA_DIRS']
        else:
            data_dirs = '/usr/local/share/:/usr/share/'
        self.application_dirs = [os.path.join(base, 'applications')
                                 for base in data_dirs.split(':')]

if 'XDG_CURRENT_DESKTOP' in os.environ:
            self.current_desktop = os.environ.get('XDG_CURRENT_DESKTOP')
        else:
            self.current_desktop = ''
        self.desktop_cache = {}

def _file_is_application(self, file_path):
        # WARNING: This is called often if there's a lot of updates. A poor
        # performing call here has a huge impact on the overall performance!
        if not file_path.endswith(".desktop"):
            # First the obvious case: If the path doesn't end in a .desktop
            # extension, this isn't a desktop file.
            return False

file_path = os.path.abspath(file_path)
        for app_dir in self.application_dirs:
            if file_path.startswith(app_dir):
                return True
        return False

def _rate_application_for_package(self, application, pkg):
        score = 0
        desktop_file = os.path.basename(application.get_filename())
        application_id = os.path.splitext(desktop_file)[0]

if application.should_show():
            score += 1

if application_id == pkg.name:
                score += 5

return score

def _get_application_for_package(self, pkg):
        desktop_files = []
        rated_applications = []

for installed_file in pkg.installed_files:
            if self._file_is_application(installed_file):
                desktop_files.append(installed_file)

if pkg.name in self.desktop_cache:
            desktop_files += self.desktop_cache[pkg.name]

for desktop_file in desktop_files:
            try:
                application = Gio.DesktopAppInfo.new_from_filename(
                    desktop_file)
                application.set_desktop_env(self.current_desktop)
            except Exception as e:
                logging.warning("Error loading .desktop file %s: %s" %
                                (desktop_file, e))
                continue
            score = self._rate_application_for_package(application, pkg)
            if score > 0:
                rated_applications.append((score, application))

rated_applications.sort(key=lambda app: app[0], reverse=True)
        if len(rated_applications) > 0:
            return rated_applications[0][1]
        else:
            return None

def _populate_desktop_cache(self, pkg_names):
        if not pkg_names:
            # No updates; This shouldn't have happened.
            logging.warning("_populate_desktop_cache called with empty list "
                            "of packages.")
            return
        elif len(pkg_names) == 1:
            # One update; Let glob do the matching.
            pattern = self.APP_INSTALL_PATTERN % pkg_names[0]
        else:
            # More than one update available. Glob all desktop files and store
            # those that match an upgradeable package.
            pattern = self.APP_INSTALL_PATTERN % "*"

for desktop_file in glob.iglob(pattern):
            try:
                pkg = desktop_file.split('/')[-1].split(":")[0]
            except IndexError:
                # app-install-data desktop file had an unexpected naming
                # convention. As we can't extract the package name from
                # the path, just ignore it.
                logging.error("Could not extract package name from '%s'. "
                              "File ignored." % desktop_file)
                continue

if pkg in pkg_names:
                self.desktop_cache.setdefault(pkg, []).append(desktop_file)
                logging.debug("App candidate for %s: %s" %
                              (pkg, desktop_file))

def _is_security_update(self, pkg):
        """ This will test if the pkg is a security update.
            This includes if there is a newer version in -updates, but also
            an older update available in -security.  For example, if
            installed pkg A v1.0 is available in both -updates (as v1.2) and
            -security (v1.1). we want to display it as a security update.

:return: True if the update comes from the security pocket
        """
        if not self.dist:
            return False
        inst_ver = pkg._pkg.current_ver
        for ver in pkg._pkg.version_list:
            # discard is < than installed ver
            if (inst_ver
                    and apt.apt_pkg.version_compare(ver.ver_str,
                                                    inst_ver.ver_str) <= 0):
                continue
            # check if we have a match
            for (verFileIter, index) in ver.file_list:
                if verFileIter.archive == "%s-security" % self.dist and \
                        verFileIter.origin == "Ubuntu":
                    indexfile = pkg._pcache._list.find_index(verFileIter)
                    if indexfile:  # and indexfile.IsTrusted:
                        return True
        return False

def _is_ignored_phased_update(self, pkg):
        """ This will test if the pkg is a phased update and if
            it needs to get installed or ignored.

:return: True if the updates should be ignored
        """
        # allow the admin to override this
        if apt.apt_pkg.config.find_b(
                self.ALWAYS_INCLUDE_PHASED_UPDATES, False):
            return False

if self.PHASED_UPDATES_KEY in pkg.candidate.record:
            if apt.apt_pkg.config.find_b(
                    self.NEVER_INCLUDE_PHASED_UPDATES, False):
                logging.info("holding back phased update per configuration")
                return True

# its important that we always get the same result on
            # multiple runs of the update-manager, so we need to
            # feed a seed that is a combination of the pkg/ver/machine
            self.random.seed("%s-%s-%s" % (
                pkg.candidate.source_name, pkg.candidate.version,
                self.machine_uniq_id))
            threshold = pkg.candidate.record[self.PHASED_UPDATES_KEY]
            percentage = self.random.randint(0, 100)
            if percentage > int(threshold):
                logging.info("holding back phased update %s (%s < %s)" % (
                    pkg.name, threshold, percentage))
                return True
        return False

def _make_groups(self, cache, pkgs, eventloop_callback, to_remove=False,
                     sensitive=True):
        if not pkgs:
            return []
        ungrouped_pkgs = []
        app_groups = []
        pkg_groups = []

for pkg in pkgs:
            app = self._get_application_for_package(pkg)
            if app is not None:
                app_group = UpdateApplicationGroup(pkg, app, to_remove,
                                                   sensitive)
                app_groups.append(app_group)
            else:
                ungrouped_pkgs.append(pkg)

# Stick together applications and their immediate dependencies
        for pkg in list(ungrouped_pkgs):
            dep_groups = []
            for group in app_groups:
                if group.is_dependency(pkg, cache, eventloop_callback):
                    dep_groups.append(group)
                    if len(dep_groups) > 1:
                        break
            if len(dep_groups) == 1:
                dep_groups[0].add(pkg, cache, eventloop_callback, to_remove)
                ungrouped_pkgs.remove(pkg)

system_group = None
        if ungrouped_pkgs:
            # Separate out system base packages. If we have already found an
            # application for all updates, don't bother.
            linux_names = ("linux$",
                           "linux-.*-buildinfo.*",
                           "linux-.*-dev.*",
                           "linux-.*-generic.*",
                           "linux-.*-headers.*",
                           "linux-.*-hwe.*",
                           "linux-.*-gcp.*",
                           "linux-.*-kernel.*",
                           "linux-.*-lowlatency.*",
                           "linux-.*-modules.*",
                           "linux-.*-raspi.*",
                           "linux-.*-tools.*",
                           "linux-.*-virtual.*",
                           "linux-base.*",
                           "linux-crashdump.*",
                           "linux-doc.*")
            linux_regexp = re.compile("(" + "|".join(
                ["^" + n for n in linux_names]) + ")")
            ubuntu_base_group = UpdateGroup(None, None, None, to_remove,
                                            sensitive)
            flavor_package = utils.get_ubuntu_flavor_package(cache=cache)
            ubuntu_base_pkgs = [flavor_package,
                                "ubuntu-standard",
                                "ubuntu-minimal"]
            for pkg in cache:
                if linux_regexp.match(pkg.name):
                    ubuntu_base_pkgs.append(pkg.name)
            for pkg in ubuntu_base_pkgs:
                if pkg in cache and not to_remove:
                    # the check for to_remove avoids creating groups in
                    # kernel_autoremove and duplicate package sections
                    # which fixes LP: #1912718
                    ubuntu_base_group.add(cache[pkg])
            for pkg in ungrouped_pkgs:
                if ubuntu_base_group.is_dependency(pkg, cache,
                                                   eventloop_callback):
                    if system_group is None:
                        system_group = UpdateSystemGroup(cache, to_remove,
                                                         sensitive)
                    system_group.add(pkg)
                else:
                    pkg_groups.append(UpdatePackageGroup(
                        pkg, to_remove, sensitive)
                    )

app_groups.sort(key=lambda a: a.name.lower())
        pkg_groups.sort(key=lambda a: a.name.lower())
        if system_group:
            pkg_groups.append(system_group)

return app_groups + pkg_groups

def update(self, cache, eventloop_callback=None, duplicate_packages=[],
               ua_security_packages=[]):
        self.held_back = []

# do the upgrade
        self.distUpgradeWouldDelete = cache.saveDistUpgrade()

oem_pkgs = []
        pro_pkgs = []
        security_pkgs = []
        upgrade_pkgs = []
        kernel_autoremove_pkgs = []
        duplicate_pkgs = []

class FakeUbuntuProPackageCandidate:
            def __init__(self, source_name, version, size):
                self.source_name = source_name
                self.summary = source_name
                self.description = source_name
                self.version = version
                self.size = size
                self.downloadable = False
                self.record = {}

class FakeUbuntuProPackage:
            def __init__(self, package_name, version, size):
                self.name = package_name
                self.candidate = FakeUbuntuProPackageCandidate(package_name,
                                                               version, size)
                self.marked_install = False
                self.marked_upgrade = False
                self.marked_delete = False
                self.installed_files = []

def mark_install(self):
                pass

def mark_delete(self):
                pass
        fake_ua_packages = []
        ua_packages_names = []
        for (
            package_name,
            version,
            size,
            downloadable
        ) in ua_security_packages:
            if downloadable:
                ua_packages_names.append(package_name)
            else:
                fake_ua_packages.append(FakeUbuntuProPackage(package_name,
                                                             version, size))

# Find all upgradable packages
        for pkg in cache:
            if pkg.is_upgradable or pkg.marked_install:
                if getattr(pkg.candidate, "origins", None) is None:
                    # can happen for e.g. locked packages
                    # FIXME: do something more sensible here (but what?)
                    print("WARNING: upgradable but no candidate.origins?!?: ",
                          pkg.name)
                    continue

# see if its a phased update and *not* a security update
                # keep track of packages for which the update percentage was
                # not met for testing
                is_security_update = self._is_security_update(pkg)
                if not is_security_update:
                    if self._is_ignored_phased_update(pkg):
                        self.ignored_phased_updates.append(pkg)
                        continue

if fnmatch.fnmatch(pkg.name, 'oem-*-meta'):
                    oem_pkgs.append(pkg)
                comes_from_pro = pkg.name in ua_packages_names
                if comes_from_pro:
                    pro_pkgs.append(pkg)
                elif is_security_update:
                    security_pkgs.append(pkg)
                else:
                    upgrade_pkgs.append(pkg)
                self.num_updates = self.num_updates + 1

if pkg.is_upgradable and not (pkg.marked_upgrade
                                          or pkg.marked_install):
                self.held_back.append(pkg.name)
                continue
            if (pkg.is_auto_removable
                and (cache.versioned_kernel_pkgs_regexp
                     and cache.versioned_kernel_pkgs_regexp.match(pkg.name)
                     and not cache.running_kernel_pkgs_regexp.match(
                         pkg.name))):
                kernel_autoremove_pkgs.append(pkg)
            if (pkg.name in duplicate_packages):
                duplicate_pkgs.append(pkg)

# perform operations after the loop to not skip packages which
        # changed state due to the resolver
        for pkg in kernel_autoremove_pkgs:
            pkg.mark_delete()
        for pkg in duplicate_pkgs:
            pkg.mark_delete()
        for pkg in self.ignored_phased_updates:
            pkg.mark_keep()

if security_pkgs or upgrade_pkgs or pro_pkgs:
            # There's updates available. Initiate the desktop file cache.
            pkg_names = [p.name for p in
                         pro_pkgs
                         + security_pkgs
                         + upgrade_pkgs
                         + kernel_autoremove_pkgs
                         + duplicate_pkgs]
            self._populate_desktop_cache(pkg_names)
        self.oem_groups = self._make_groups(cache, oem_pkgs,
                                            eventloop_callback)
        self.update_groups = self._make_groups(cache, upgrade_pkgs,
                                               eventloop_callback)
        self.security_groups = self._make_groups(cache, security_pkgs,
                                                 eventloop_callback)
        self.kernel_autoremove_groups = self._make_groups(
            cache, kernel_autoremove_pkgs, eventloop_callback, True)
        self.duplicate_groups = self._make_groups(
            cache, duplicate_pkgs, eventloop_callback, True)
        self.ubuntu_pro_fake_groups = self._make_groups(
            cache, fake_ua_packages, eventloop_callback, sensitive=False)
        self.ubuntu_pro_groups = self._make_groups(
            cache, pro_pkgs, eventloop_callback)

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2023-12-13 09:30:54
..	dir	-	root/root	0755	2023-12-13 09:30:54
__pycache__	dir	-	root/root	0755	2023-12-13 09:30:54
AlertWatcher.py	text/x-script.python	3.99 KB	root/root	0644	2023-11-15 10:28:54
LivePatchSocket.py	text/x-script.python	3.71 KB	root/root	0644	2023-11-15 10:28:54
MetaRelease.py	text/x-script.python	17.06 KB	root/root	0644	2023-11-15 10:28:54
MyCache.py	text/x-script.python	18.44 KB	root/root	0644	2023-11-15 10:28:54
UpdateList.py	text/x-script.python	24.08 KB	root/root	0644	2023-11-15 10:28:54
__init__.py	application/x-empty	0 B	root/root	0644	2023-11-15 10:28:54
roam.py	text/x-script.python	7.99 KB	root/root	0644	2023-11-15 10:28:54
utils.py	text/x-script.python	18.11 KB	root/root	0644	2023-11-15 10:28:54

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