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#!/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 gettext
import subprocess
SYNAPTIC_PINFILE = "/var/lib/synaptic/preferences"
DISTRO = subprocess.check_output(
["lsb_release", "-c", "-s"],
universal_newlines=True).strip()
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 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),
("UbuntuESM", "%s-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):
" check if the given version is a security update (or masks one) "
for (file, index) in ver.file_list:
if file.origin == "UbuntuESM" and file.archive.startswith(DISTRO):
return True
return False
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 write_human_readable_summary(outstream, upgrades, security_updates,
esm_updates, have_esm, disabled_esm_updates):
" write out human summary summary to outstream "
if have_esm is not None:
if have_esm:
outstream.write(gettext.dgettext("update-notifier",
"Extended Security Maintenance "
"(ESM) is enabled."))
else:
outstream.write(gettext.dgettext("update-notifier",
"Extended Security Maintenance "
"(ESM) is not enabled."))
outstream.write("\n\n")
outstream.write(gettext.dngettext("update-notifier",
"%i update can be installed "
"immediately.",
"%i updates can be installed "
"immediately.",
upgrades) % upgrades)
outstream.write("\n")
if esm_updates > 0:
outstream.write(gettext.dngettext("update-notifier",
"%i of these updates is "
"provided through ESM.",
"%i of these updates are "
"provided through ESM.",
esm_updates) %
esm_updates)
outstream.write("\n")
outstream.write(gettext.dngettext("update-notifier",
"%i of these updates is a "
"security update.",
"%i of these updates are "
"security updates.",
security_updates) %
security_updates)
outstream.write("\n")
if have_esm is not None and not have_esm:
outstream.write("\n")
if disabled_esm_updates > 0:
outstream.write(gettext.dngettext("update-notifier",
"Enable ESM to receive %i "
"additional security update.",
"Enable ESM to receive %i "
"additional security updates.",
disabled_esm_updates) %
disabled_esm_updates)
else:
outstream.write(gettext.dgettext("update-notifier",
"Enable ESM to receive "
"additional future security "
"updates."))
outstream.write("\n")
outstream.write(gettext.dgettext("update-notifier",
"See 'ua enable esm' or "
"https://ubuntu.com/esm"))
outstream.write("\n")
def has_disabled_esm_security_update(depcache, pkg):
" check if we have a disabled ESM security update "
inst_ver = pkg.current_ver
if not inst_ver:
return False
for ver in pkg.version_list:
if ver == inst_ver:
break
for (file, index) in ver.file_list:
if (file.origin == "UbuntuESM" and file.archive.startswith(DISTRO)
and depcache.policy.get_priority(file) == -32768):
return True
return False
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)
# Check if we have ESM enabled or disabled; and if it exists in the
# first place.
have_esm = None # None == does not exist
for file in cache.file_list:
if file.origin == "UbuntuESM" and file.archive.startswith(DISTRO):
# In case of multiple ESM repos, one enabled is sufficient.
if depcache.policy.get_priority(file) == -32768:
# We found a disabled ESM repository, but we'll only count
# ESM as disabled here if we have not found any other ESM
# repo, so one ESM repo being enabled means ESM is enabled.
if have_esm is None:
have_esm = False
else:
have_esm = True
break
# analyze the ugprade
upgrades = 0
security_updates = 0
esm_updates = 0
disabled_esm_updates = 0
# we need another cache that has more pkg details
with apt.Cache() as aptcache:
for pkg in cache.packages:
if has_disabled_esm_security_update(depcache, pkg):
disabled_esm_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 isESMUpgrade(cand_ver):
esm_updates += 1
upgrades += 1
security_updates += 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 isESMUpgrade(ver):
esm_updates += 1
if 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_updates, have_esm,
disabled_esm_updates)
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("",
"--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)
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