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PHP 8.1.31
Preview: apt_check.py Size: 18.99 KB
//lib/update-notifier/apt_check.py
#!/usr/bin/python3


# nice apt-get -s -o Debug::NoLocking=true upgrade | grep ^Inst

import apt
import apt_pkg
import os
import sys
from optparse import OptionParser
import re
import gettext
import distro_info
import subprocess


SYNAPTIC_PINFILE = "/var/lib/synaptic/preferences"
OS_RELEASE_PATH = "/etc/os-release"
PRO_ESM_CACHE_DIR = "/var/lib/ubuntu-advantage/apt-esm/"


def _get_info_from_os_release(key):
    " get info directly from os-release file "
    if os.path.exists(OS_RELEASE_PATH):
        with open(OS_RELEASE_PATH) as f:
            search_res = re.search(
                r"{}=(?P<name>.*)".format(key),
                f.read()
            )
            if search_res:
                return search_res.group("name")
            else:
                raise Exception(
                    "Could not find {} in {}".format(
                        key, OS_RELEASE_PATH
                    )
                )
    else:
        raise Exception(
            "File {} was not found on the system".format(
                OS_RELEASE_PATH
            )
        )


def _get_output_from_lsb_release(lsb_option):
    " get info from lsb_release output "
    return subprocess.check_output(
        ["lsb_release", lsb_option, "-s"], universal_newlines=True
    ).strip()


def get_distro():
    " get distro name "
    try:
        return _get_info_from_os_release(key="UBUNTU_CODENAME")
    except Exception:
        # If the system does not have os-release file or does not have the
        # required entry in it, we will get the distro name from lsb_release
        # command
        return _get_output_from_lsb_release("-c")


DISTRO = get_distro()

ESM_INFRA_ORIGIN = "UbuntuESM"
ESM_APPS_ORIGIN = "UbuntuESMApps"
ESM_ORIGINS = (ESM_INFRA_ORIGIN, ESM_APPS_ORIGIN)


def _(msg):
    return gettext.dgettext("update-notifier", msg)


def _handleException(type, value, tb):
    sys.stderr.write("E: " + _("Unknown Error: '%s' (%s)") % (type, value))
    sys.exit(-1)


def get_distro_version():
    " get distro version "
    try:
        return _get_info_from_os_release(key="VERSION_ID").replace('"', "")
    except Exception:
        # If the system does not have os-release file or does not have the
        # required entry in it, we will get the distro name from lsb_release
        # command
        return _get_output_from_lsb_release("-r")


def clean(cache, depcache):
    " unmark (clean) all changes from the given depcache "
    # mvo: looping is too inefficient with the new auto-mark code
    # for pkg in cache.Packages:
    #     depcache.MarkKeep(pkg)
    depcache.init()


def saveDistUpgrade(cache, depcache):
    """ this function mimics a upgrade but will never remove anything """
    depcache.upgrade(True)
    if depcache.del_count > 0:
        clean(cache, depcache)
    depcache.upgrade()


def isSecurityUpgrade(ver):
    " check if the given version is a security update (or masks one) "
    security_pockets = [("Ubuntu", "%s-security" % DISTRO),
                        (ESM_INFRA_ORIGIN, "%s-infra-security" % DISTRO),
                        (ESM_APPS_ORIGIN, "%s-apps-security" % DISTRO),
                        ("gNewSense", "%s-security" % DISTRO),
                        ("Debian", "%s-updates" % DISTRO)]
    for (file, index) in ver.file_list:
        for origin, archive in security_pockets:
            if (file.archive == archive and file.origin == origin):
                return True
    return False


def _isESMUpgrade(ver, esm_origin):
    " check if the given version is a security update (or masks one) "
    for (file, index) in ver.file_list:
        if file.origin == esm_origin and file.archive.startswith(DISTRO):
            return True
    return False


def isESMAppsUpgrade(ver):
    " check if the given version is an ESM Apps upgrade "
    return _isESMUpgrade(ver, esm_origin=ESM_APPS_ORIGIN)


def isESMInfraUpgrade(ver):
    " check if the given version is an ESM Infra upgrade "
    return _isESMUpgrade(ver, esm_origin=ESM_INFRA_ORIGIN)


def write_package_names(outstream, cache, depcache):
    " write out package names that change to outstream "
    pkgs = [pkg for pkg in cache.packages if depcache.marked_install(pkg)
            or depcache.marked_upgrade(pkg)]
    outstream.write("\n".join([p.name for p in pkgs]))


def is_esm_distro():
    " check if the current distro is ESM or not "
    ubuntu_distro = distro_info.UbuntuDistroInfo()

    is_esm_supported = bool(
        DISTRO in ubuntu_distro.supported_esm()
    )

    is_not_currently_supported = bool(
        DISTRO in ubuntu_distro.unsupported()
    )

    return is_esm_supported and is_not_currently_supported


def is_lts_distro():
    " check if the current distro is LTS or not"
    return distro_info.UbuntuDistroInfo().is_lts(DISTRO)


def _output_esm_package_count(outstream, service_type, esm_pkg_count):
    " output the number of packages upgrades related to esm service "
    if esm_pkg_count > 0:
        outstream.write("\n")
        outstream.write(gettext.dngettext("update-notifier",
                                          "%d of these updates "
                                          "is an ESM %s "
                                          "security update.",
                                          "%d of these updates "
                                          "are ESM %s "
                                          "security updates.",
                                          esm_pkg_count) %
                        (esm_pkg_count, service_type))


def _output_esm_package_alert(
    outstream, service_type, disabled_pkg_count, is_esm=False
):
    " output the number of upgradable packages if esm service was enabled "
    outstream.write("\n")
    if disabled_pkg_count > 0:
        outstream.write("\n")

        if is_esm:
            distro_version = get_distro_version()
            esm_info_url = "https://ubuntu.com/{}".format(
                distro_version.replace(".", "-")
            )
            learn_msg_suffix = "for Ubuntu {} at\n{}".format(
                distro_version, esm_info_url)
        else:
            learn_msg_suffix = "at https://ubuntu.com/esm"

        outstream.write(gettext.dngettext("update-notifier",
                                          "%i additional security "
                                          "update can be applied "
                                          "with ESM %s.\nLearn "
                                          "more about enabling ESM %s "
                                          "service %s",
                                          "%i additional security "
                                          "updates can be applied "
                                          "with ESM %s.\nLearn "
                                          "more about enabling "
                                          "ESM %s service %s",
                                          disabled_pkg_count) %
                        (disabled_pkg_count, service_type, service_type,
                         learn_msg_suffix))
    else:
        outstream.write("\n")
        outstream.write(gettext.dgettext("update-notifier",
                                         "Enable ESM %s to "
                                         "receive additional future "
                                         "security updates.") %
                        service_type)

        outstream.write("\n")
        outstream.write(
            gettext.dgettext("update-notifier",
                             "See https://ubuntu.com/esm "
                             "or run: sudo pro status")
        )


def _output_esm_service_status(outstream, have_esm_service, service_type):
    if have_esm_service:
        outstream.write(gettext.dgettext("update-notifier",
                                         "Expanded Security Maintenance for "
                                         "%s is enabled.") % service_type)
    else:
        outstream.write(gettext.dgettext("update-notifier",
                                         "Expanded Security Maintenance for "
                                         "%s is not enabled.") % service_type)
    outstream.write("\n\n")


def write_human_readable_summary(outstream, upgrades, security_updates,
                                 esm_infra_updates, esm_apps_updates,
                                 have_esm_infra, have_esm_apps,
                                 disabled_esm_infra_updates,
                                 disabled_esm_apps_updates,
                                 hide_esm_messages=False):

    " write out human summary to outstream "
    esm_distro = is_esm_distro()
    lts_distro = is_lts_distro()

    if not hide_esm_messages:
        if have_esm_infra is not None and esm_distro:
            _output_esm_service_status(
                outstream, have_esm_infra, service_type="Infrastructure"
            )

        if have_esm_apps is not None and lts_distro and not esm_distro:
            _output_esm_service_status(
                outstream, have_esm_apps, service_type="Applications"
            )

    outstream.write(
        gettext.dngettext("update-notifier",
                          "%i update can be applied immediately.",
                          "%i updates can be applied immediately.",
                          upgrades) % upgrades
    )

    if not hide_esm_messages:
        _output_esm_package_count(
            outstream, service_type="Infra", esm_pkg_count=esm_infra_updates)
        _output_esm_package_count(
            outstream, service_type="Apps", esm_pkg_count=esm_apps_updates)

    if security_updates > 0:
        outstream.write("\n")
        outstream.write(gettext.dngettext("update-notifier",
                                          "%i of these updates is a "
                                          "standard security update.",
                                          "%i of these updates are "
                                          "standard security updates.",
                                          security_updates) %
                        security_updates)

    if any([upgrades, security_updates, esm_infra_updates, esm_apps_updates]):
        outstream.write("\n")
        outstream.write(gettext.dgettext("update-notifier",
                                         "To see these additional updates "
                                         "run: apt list --upgradable"))

    if all(
        [
            have_esm_apps is not None,
            not have_esm_apps,
            lts_distro,
            not esm_distro,
            not hide_esm_messages,
        ]
    ):
        _output_esm_package_alert(
            outstream, service_type="Apps",
            disabled_pkg_count=disabled_esm_apps_updates)

    if all(
        [
            have_esm_infra is not None,
            not have_esm_infra,
            esm_distro,
            not hide_esm_messages,
        ]
    ):
        _output_esm_package_alert(
            outstream, service_type="Infra",
            disabled_pkg_count=disabled_esm_infra_updates,
            is_esm=True
        )

    outstream.write("\n")


def has_disabled_esm_security_update(esm_cache, pkg, esm_origin):
    " check if we have a disabled ESM security update "
    inst_ver = pkg.current_ver
    if not inst_ver:
        return False

    if pkg.name not in esm_cache:
        return False

    esm_update = esm_cache[pkg.name]
    for version in esm_update.version_list:
        for (file, index) in version.file_list:
            if file.origin == esm_origin:
                return True

    return False


def has_disabled_esm_apps_security_update(esm_cache, pkg):
    " check if we have a disabled ESM Apps security update "
    return has_disabled_esm_security_update(esm_cache, pkg, ESM_APPS_ORIGIN)


def has_disabled_esm_infra_security_update(esm_cache, pkg):
    " check if we have a disabled ESM Infra security update "
    return has_disabled_esm_security_update(esm_cache, pkg, ESM_INFRA_ORIGIN)


def has_esm_service(cache, esm_origin):
    " check if we have an enabled ESM service in the machine "
    for file in cache.file_list:
        origin = file.origin
        if origin == esm_origin and file.archive.startswith(DISTRO):
            return True

    return False


def get_apt_pkg_esm_cache():
    """Get an apt_pkg cache with the ubuntu-advantage-tools esm data.

    Set the configuration to get the u-a-t cache, then set it back to an
    empty configuration state and init again so other calls to Cache work as
    expected.
    """
    for key in apt_pkg.config.keys():
        if re.match(r"^Acquire", key) is None:
            apt_pkg.config.clear(key)
    apt_pkg.config.set("Dir", PRO_ESM_CACHE_DIR)
    apt_pkg.init()
    try:
        esm_cache = apt_pkg.Cache(progress=None)
    except apt_pkg.Error:
        esm_cache = None

    for key in apt_pkg.config.keys():
        apt_pkg.config.clear(key)
    apt_pkg.init()

    return esm_cache


def init():
    " init the system, be nice "
    # FIXME: do a ionice here too?
    os.nice(19)
    apt_pkg.init()


def run(options=None):

    # we are run in "are security updates installed automatically?"
    # question mode
    if options.security_updates_unattended:
        res = apt_pkg.config.find_i("APT::Periodic::Unattended-Upgrade", 0)
        # print(res)
        sys.exit(res)

    # get caches
    try:
        cache = apt_pkg.Cache(apt.progress.base.OpProgress())
    except SystemError as e:
        sys.stderr.write("E: " + _("Error: Opening the cache (%s)") % e)
        sys.exit(-1)
    depcache = apt_pkg.DepCache(cache)

    # read the synaptic pins too
    if os.path.exists(SYNAPTIC_PINFILE):
        depcache.read_pinfile(SYNAPTIC_PINFILE)
        depcache.init()

    if depcache.broken_count > 0:
        sys.stderr.write("E: " + _("Error: BrokenCount > 0"))
        sys.exit(-1)

    # do the upgrade (not dist-upgrade!)
    try:
        saveDistUpgrade(cache, depcache)
    except SystemError as e:
        sys.stderr.write("E: " + _("Error: Marking the upgrade (%s)") % e)
        sys.exit(-1)

    esm_cache = get_apt_pkg_esm_cache()

    # Check if we have ESM enabled or disabled; and if it exists in the
    # first place.
    have_esm_infra = has_esm_service(cache, esm_origin=ESM_INFRA_ORIGIN)
    have_esm_apps = has_esm_service(cache, esm_origin=ESM_APPS_ORIGIN)

    # analyze the ugprade
    upgrades = 0
    security_updates = 0
    esm_apps_updates = 0
    esm_infra_updates = 0
    disabled_esm_apps_updates = 0
    disabled_esm_infra_updates = 0

    # we need another cache that has more pkg details
    with apt.Cache() as aptcache:
        for pkg in cache.packages:
            if esm_cache:
                if has_disabled_esm_apps_security_update(esm_cache, pkg):
                    disabled_esm_apps_updates += 1
                if has_disabled_esm_infra_security_update(esm_cache, pkg):
                    disabled_esm_infra_updates += 1

            # skip packages that are not marked upgraded/installed
            if not (depcache.marked_install(pkg)
                    or depcache.marked_upgrade(pkg)):
                continue
            # check if this is really a upgrade or a false positive
            # (workaround for ubuntu #7907)
            inst_ver = pkg.current_ver
            cand_ver = depcache.get_candidate_ver(pkg)
            if cand_ver == inst_ver:
                continue
            # check for security upgrades
            if isSecurityUpgrade(cand_ver):
                if have_esm_apps and isESMAppsUpgrade(cand_ver):
                    esm_apps_updates += 1
                elif have_esm_infra and isESMInfraUpgrade(cand_ver):
                    esm_infra_updates += 1
                else:
                    security_updates += 1

                upgrades += 1
                continue

            # check to see if the update is a phased one
            try:
                from UpdateManager.Core.UpdateList import UpdateList
                ul = UpdateList(None)
                ignored = ul._is_ignored_phased_update(
                    aptcache[pkg.get_fullname()])
                if ignored:
                    depcache.mark_keep(pkg)
                    continue
            except ImportError:
                pass

            upgrades = upgrades + 1

            # now check for security updates that are masked by a
            # candidate version from another repo (-proposed or -updates)
            for ver in pkg.version_list:
                if (inst_ver
                        and apt_pkg.version_compare(ver.ver_str,
                                                    inst_ver.ver_str) <= 0):
                    continue
                if have_esm_apps and isESMAppsUpgrade(cand_ver):
                    esm_apps_updates += 1
                elif have_esm_infra and isESMInfraUpgrade(cand_ver):
                    esm_infra_updates += 1
                elif isSecurityUpgrade(ver):
                    security_updates += 1
                    break

    # print the number of upgrades
    if options and options.show_package_names:
        write_package_names(sys.stderr, cache, depcache)
    elif options and options.readable_output:
        write_human_readable_summary(sys.stdout, upgrades, security_updates,
                                     esm_infra_updates, esm_apps_updates,
                                     have_esm_infra, have_esm_apps,
                                     disabled_esm_infra_updates,
                                     disabled_esm_apps_updates,
                                     options.hide_esm_messages)
    else:
        # print the number of regular upgrades and the number of
        # security upgrades
        sys.stderr.write("%s;%s" % (upgrades, security_updates))

    # return the number of upgrades (if its used as a module)
    return(upgrades, security_updates)


if __name__ == "__main__":
    # setup a exception handler to make sure that uncaught stuff goes
    # to the notifier
    sys.excepthook = _handleException

    # gettext
    APP = "update-notifier"
    DIR = "/usr/share/locale"
    gettext.bindtextdomain(APP, DIR)
    gettext.textdomain(APP)

    # check arguments
    parser = OptionParser()
    parser.add_option("-p",
                      "--package-names",
                      action="store_true",
                      dest="show_package_names",
                      help=_("Show the packages that are "
                             "going to be installed/upgraded"))
    parser.add_option("",
                      "--human-readable",
                      action="store_true",
                      dest="readable_output",
                      help=_("Show human readable output on stdout"))
    parser.add_option("",
                      "--no-esm-messages",
                      action="store_true",
                      dest="hide_esm_messages",
                      help=_("Do not show esm related messages in human "
                             "readable output"))
    parser.add_option("",
                      "--security-updates-unattended",
                      action="store_true",
                      help=_("Return the time in days when security updates "
                             "are installed unattended (0 means disabled)"))
    (options, args) = parser.parse_args()

    # run it
    init()
    run(options)

Directory Contents

Dirs: 0 × Files: 12
Name Size Perms Modified Actions
apt-cdrom-check
2.39 KB lrwxr-xr-x 2024-03-04 10:57:08
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apt-check
18.99 KB lrwxr-xr-x 2024-03-04 10:57:08
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apt_check.py
18.99 KB lrwxr-xr-x 2024-03-04 10:57:08
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backend_helper.py
4.77 KB lrwxr-xr-x 2024-03-04 10:57:08
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cddistupgrader
619 B lrwxr-xr-x 2024-03-04 10:57:08
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list-oem-metapackages
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package-data-downloader
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package-system-locked
358 B lrwxr-xr-x 2024-03-04 10:57:08
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update-motd-fsck-at-reboot
2.79 KB lrwxr-xr-x 2024-03-04 10:57:08
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update-motd-hwe-eol
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update-motd-reboot-required
115 B lrwxr-xr-x 2024-03-04 10:57:08
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update-motd-updates-available
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Kotlin Archives - Weelorum https://weelorum.com/technology/kotlin/ Full Cycle Mobile App Development Services For Startups Sun, 01 Mar 2026 20:04:38 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 PayFlow https://weelorum.com/portfolio-projects/payflow/ Sun, 01 Mar 2026 20:04:38 +0000 https://weelorum.com/success-stories/payflow/ PayFlow is a fintech application that simplifies international money transfers and currency exchange. Users can hold multiple currencies, send money globally with competitive rates, and receive instant notifications. The app features biometric authentication and real-time transaction tracking.

Сообщение PayFlow появились сначала на Weelorum.

]]> PayFlow is a fintech application that simplifies international money transfers and currency exchange. Users can hold multiple currencies, send money globally with competitive rates, and receive instant notifications. The app features biometric authentication and real-time transaction tracking.

Сообщение PayFlow появились сначала на Weelorum.

]]> Knock Knock https://weelorum.com/portfolio-projects/knock-knock/ Sun, 01 Mar 2026 20:04:37 +0000 https://weelorum.com/success-stories/knock-knock/ Knock Knock is a real-time restaurant discovery app. It shows users what’s happening inside venues, how crowded they are, and offers live previews via photos and video. The app uses geolocation to help people choose where to eat or socialize based on current ambiance.

Сообщение Knock Knock появились сначала на Weelorum.

]]> Knock Knock is a real-time restaurant discovery app. It shows users what’s happening inside venues, how crowded they are, and offers live previews via photos and video. The app uses geolocation to help people choose where to eat or socialize based on current ambiance.

Сообщение Knock Knock появились сначала на Weelorum.

]]>