#!/bin/sh
--#
--
#set -e
#
# This file understands the following apt configuration variables:
++# Values here are the default.
++# Create /etc/apt/apt.conf.d/02periodic file to set your preference.
#
--# "APT::Periodic::Update-Package-Lists=1"
--# - Do "apt-get update" automatically every n-days (0=disable)
--#
--# "APT::Periodic::Download-Upgradeable-Packages=0",
--# - Do "apt-get upgrade --download-only" every n-days (0=disable)
--#
--# "APT::Periodic::AutocleanInterval"
--# - Do "apt-get autoclean" every n-days (0=disable)
++# Dir "/";
++# - RootDir for all configuration files
#
--# "APT::Periodic::Unattended-Upgrade"
--# - Run the "unattended-upgrade" security upgrade script
--# every n-days (0=disabled)
--# Requires the package "unattended-upgrades" and will write
--# a log in /var/log/unattended-upgrades
--#
--# "APT::Archives::MaxAge",
++# Dir::Cache "var/apt/cache/";
++# - Set apt package cache directory
++#
++# Dir::Cache::Archive "archives/";
++# - Set package archive directory
++#
++# APT::Periodic::BackupArchiveInterval "0";
++# - Backup after n-days if archive contents changed.(0=disable)
++#
++# APT::Periodic::BackupLevel "3";
++# - Backup level.(0=disable), 1 is invalid.
++#
++# Dir::Cache::Backup "backup/";
++# - Set periodic package backup directory
++#
++# APT::Archives::MaxAge "0"; (old, deprecated)
++# APT::Periodic::MaxAge "0"; (new)
# - Set maximum allowed age of a cache package file. If a cache
# package file is older it is deleted (0=disable)
#
--# "APT::Archives::MaxSize",
++# APT::Archives::MinAge "2"; (old, deprecated)
++# APT::Periodic::MinAge "2"; (new)
++# - Set minimum age of a package file. If a file is younger it
++# will not be deleted (0=disable). Usefull to prevent races
++# and to keep backups of the packages for emergency.
++#
++# APT::Archives::MaxSize "0"; (old, deprecated)
++# APT::Periodic::MaxSize "0"; (new)
# - Set maximum size of the cache in MB (0=disable). If the cache
# is bigger, cached package files are deleted until the size
# requirement is met (the biggest packages will be deleted
# first).
#
--# "APT::Archives::MinAge"
--# - Set minimum age of a package file. If a file is younger it
--# will not be deleted (0=disable). Usefull to prevent races
--# and to keep backups of the packages for emergency.
++# APT::Periodic::Update-Package-Lists "0";
++# - Do "apt-get update" automatically every n-days (0=disable)
++#
++# APT::Periodic::Download-Upgradeable-Packages "0";
++# - Do "apt-get upgrade --download-only" every n-days (0=disable)
++#
++# APT::Periodic::Unattended-Upgrade "0";
++# - Run the "unattended-upgrade" security upgrade script
++# every n-days (0=disabled)
++# Requires the package "unattended-upgrades" and will write
++# a log in /var/log/unattended-upgrades
#
++# APT::Periodic::AutocleanInterval "0";
++# - Do "apt-get autoclean" every n-days (0=disable)
++#
++# APT::Periodic::Verbose "0";
++# - Send report mail to root
++# 0: no report (or null string)
++# 1: progress report (actually any string)
++# 2: + command outputs (remove -qq, remove 2>/dev/null, add -d)
++# 3: + trace on
check_stamp()
{
interval="$2"
if [ $interval -eq 0 ]; then
++ debug_echo "check_stamp: interval=0."
++ # treat as no time has passed
return 1
fi
if [ ! -f $stamp ]; then
++ update_stamp $stamp
++ debug_echo "check_stamp: missing time stamp file: $stamp."
++ # treat as enough time has passed
return 0
fi
# compare midnight today to midnight the day the stamp was updated
-- stamp=$(date --date=$(date -r $stamp --iso-8601) +%s)
-- now=$(date --date=$(date --iso-8601) +%s)
++ stamp=$(date -r $stamp '+%s')
delta=$(($now-$stamp))
-- # intervall is in days,
++ # intervall is in days, convert to sec.
interval=$(($interval*60*60*24))
-- #echo "stampfile: $1"
-- #echo "interval=$interval, now=$now, stamp=$stamp, delta=$delta"
++ debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp, delta=$delta (sec)"
if [ $delta -ge $interval ]; then
return 0
update_stamp()
{
stamp="$1"
--
touch $stamp
}
--
--
--# we check here if autoclean was enough sizewise
--check_size_constraints()
++debug_echo()
{
-- # min-age in days
-- MaxAge=0
-- MinAge=2
-- MaxSize=0
-- CacheDir="var/cache/apt"
-- CacheArchive="archives/"
-- eval $(apt-config shell MaxAge APT::Archives::MaxAge)
-- eval $(apt-config shell MinAge APT::Archives::MinAge)
-- eval $(apt-config shell MaxSize APT::Archives::MaxSize)
-- eval $(apt-config shell Dir Dir)
-- eval $(apt-config shell CacheDir Dir::Cache)
-- eval $(apt-config shell CacheArchive Dir::Cache::archives)
--
-- # sanity check
-- if [ -z "$CacheDir" -o -z "$CacheArchive" ]; then
-- echo "empty Dir::Cache or Dir::Cache::archives, exiting"
-- exit
++ # Display message if $VERBOSE >= 1
++ if [ "$VERBOSE" -ge 1 ]; then
++ echo $1 1>&2
fi
--
-- Cache="${Dir%/}/${CacheDir%/}/${CacheArchive%/}/"
++}
++
++# check apt-config exstance
++if ! which apt-config >/dev/null ; then
++ exit 0
++fi
-- # check age
-- if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
-- find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 | xargs -r -0 rm -f
-- elif [ ! $MaxAge -eq 0 ]; then
-- find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 | xargs -r -0 rm -f
++# Set VERBOSE mode from apt-config (or inherit from environment)
++eval $(apt-config shell VERBOSE APT::Periodic::Verbose)
++if [ -z "$VERBOSE" ]; then
++ VERBOSE="0"
++fi
++if [ "$VERBOSE" -le 2 ]; then
++ # quiet for 0,1,2
++ XSTDOUT=">/dev/null"
++ XSTDERR="2>/dev/null"
++ XAPTOPT="-qq"
++ XUUPOPT=""
++else
++ XSTDOUT=""
++ XSTDERR=""
++ XAPTOPT=""
++ XUUPOPT="-d"
++fi
++if [ "$VERBOSE" -ge 3 ]; then
++ # trace output
++ set -x
++fi
++# laptop check, on_ac_power returns:
++# 0 (true) System is on main power
++# 1 (false) System is not on main power
++# 255 (false) Power status could not be determined
++# Desktop systems always return 255 it seems
++if which on_ac_power >/dev/null; then
++ on_ac_power
++ POWER=$?
++ if [ $POWER -eq 1 ]; then
++ debug_echo "exit: system on main power."
++ exit 0
++ elif [ $POWER -ne 0 ]; then
++ debug_echo "exit: power status ($POWER) undetermined."
++ exit 0
fi
--
-- # check size
-- if [ ! $MaxSize -eq 0 ]; then
-- # maxSize is in MB
-- MaxSize=$(($MaxSize*1024))
--
-- #get current time
-- now=$(date --date=$(date --iso-8601) +%s)
-- MinAge=$(($MinAge*24*60*60))
--
-- # reverse-sort by mtime
-- for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
-- du=$(du -s $Cache)
-- size=${du%%/*}
-- # check if the cache is small enough
-- if [ $size -lt $MaxSize ]; then
-- break
-- fi
++ debug_echo "system is on main power."
++fi
-- # check for MinAge of the file
-- if [ ! $MinAge -eq 0 ]; then
-- # check both ctime and mtime
-- mtime=$(stat -c %Y $file)
-- ctime=$(stat -c %Z $file)
-- if [ $mtime -gt $ctime ]; then
-- delta=$(($now-$mtime))
-- else
-- delta=$(($now-$ctime))
-- fi
-- #echo "$file ($delta), $MinAge"
-- if [ $delta -le $MinAge ]; then
-- #echo "Skiping $file (delta=$delta)"
-- break
-- fi
-- fi
++# check if we can lock the cache and if the cache is clean
++if which apt-get >/dev/null && ! eval apt-get check $XAPTOPT $XSTDERR ; then
++ debug_echo "error encountered in cron job with \"apt-get check\"."
++ exit 0
++fi
++# No need to check for apt-get below
-- # delete oldest file
-- rm -f $file
-- done
-- fi
--}
++# Global current time in seconds since 1970-01-01 00:00:00 UTC
++now=$(date +%s)
--# sleep for a random intervall of time (default 30min)
--# (some code taken from cron-apt, thanks)
--random_sleep()
--{
-- RandomSleep=1800
-- eval $(apt-config shell RandomSleep APT::Periodic::RandomSleep)
-- if [ $RandomSleep -eq 0 ]; then
-- return
-- fi
-- if [ -z "$RANDOM" ] ; then
-- # A fix for shells that do not have this bash feature.
-- RANDOM=$(dd if=/dev/urandom count=1 2> /dev/null | cksum | cut -c"1-5")
-- fi
-- TIME=$(($RANDOM % $RandomSleep))
-- sleep $TIME
--}
++# Set default values and normalize
++Dir="/"
++eval $(apt-config shell Dir Dir)
++Dir=${Dir%/}
++
++CacheDir="var/cache/apt/"
++eval $(apt-config shell CacheDir Dir::Cache)
++CacheDir=${CacheDir%/}
++if [ -z "$CacheDir" ]; then
++ debug_echo "practically empty Dir::Cache, exiting"
++ exit 0
++fi
--# main
++CacheArchive="archives/"
++eval $(apt-config shell CacheArchive Dir::Cache::Archives)
++CacheArchive=${CacheArchive%/}
++if [ -z "$CacheArchive" ]; then
++ debug_echo "practically empty Dir::Cache::archives, exiting"
++ exit 0
++fi
--if ! which apt-config >/dev/null; then
-- exit 0
++BackupArchiveInterval=0
++eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)
++
++BackupArchiveLevel=3
++eval $(apt-config shell BackupArchiveLevel APT::Periodic::BackupArchiveLevel)
++if [ $BackupArchiveLevel -le 1 ]; then BackupArchiveLevel=2 ; fi
++
++CacheBackup="backup/"
++eval $(apt-config shell CacheBackup Dir::Cache::Backup)
++CacheBackup=${CacheBackup%/}
++if [ -z "$CacheBackup" ]; then
++ echo "practically empty Dir::Cache::Backup, exiting" 1>&2
++ exit 0
fi
++# Support old Archive for compatibility.
++# Document only Periodic for all controling parameters of this script.
++MaxAge=0
++eval $(apt-config shell MaxAge APT::Archives::MaxAge)
++eval $(apt-config shell MaxAge APT::Periodic::MaxAge)
++
++MinAge=2
++eval $(apt-config shell MinAge APT::Archives::MinAge)
++eval $(apt-config shell MinAge APT::Periodic::MinAge)
++
++MaxSize=0
++eval $(apt-config shell MaxSize APT::Archives::MaxSize)
++eval $(apt-config shell MaxSize APT::Periodic::MaxSize)
++
UpdateInterval=0
++eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists)
++
DownloadUpgradeableInterval=0
--eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
--AutocleanInterval=$DownloadUpgradeableInterval
--eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
++eval $(apt-config shell DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
UnattendedUpgradeInterval=0
eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
++AutocleanInterval=0
++eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
++
++Cache="${Dir}/${CacheDir}/${CacheArchive}/"
++Back="${Dir}/${CacheDir}/${CacheBackup}/"
++BackX="${Back}${CacheArchive}/"
++for x in $(seq 0 1 $((${BackupLevel}-1))); do
++ eval "Back${x}=${Back}${x}/"
++done
++
++# backup after n-days if archive contents changed.
++# (This uses hardlink to save disk space)
++BACKUP_ARCHIVE_STAMP=/var/lib/apt/periodic/backup-archive-stamp
++if check_stamp $BACKUP_ARCHIVE_STAMP $BackupArchiveInterval; then
++ if [ $({(cd $Cache 2>/dev/null; find . -name "*.deb"); (cd $Back0 2>/dev/null;find . -name "*.deb") ;}| sort|uniq -u|wc -l) -ne 0 ]; then
++ mkdir -p $Back
++ rm -rf $Back$((${BackupLevel}-1))
++ for y in $(seq $((${BackupLevel}-1)) -1 1); do
++ eval BackY=${Back}$y
++ eval BackZ=${Back}$(($y-1))
++ if [ -e $BackZ ]; then mv -f $BackZ $BackY ; fi
++ done
++ cp -la $Cache $Back ; mv -f $BackX $Back0
++ update_stamp $BACKUP_ARCHIVE_STAMP
++ debug_echo "backup with hardlinks. (success)"
++ else
--# laptop check, on_ac_power returns:
--# 0 (true) System is on mains power
--# 1 (false) System is not on mains power
--# 255 (false) Power status could not be determined
--# Desktop systems always return 255 it seems
--if which on_ac_power >/dev/null; then
-- on_ac_power
-- if [ $? -eq 1 ]; then
-- exit 0
++ debug_echo "skip backup since same content."
fi
++else
++ debug_echo "skip backup since too new."
fi
--# check if we can lock the cache and if the cache is clean
--# There's a reasonable chance that someone is already running an apt
--# frontend that has locked the cache, so exit quietly if it is locked.
--if ! apt-get check -q -q 2>/dev/null; then
-- exit 0
++# package archive contnts removal by package age
++if [ $MaxAge -ne 0 ] && [ $MinAge -ne 0 ]; then
++ find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 | xargs -r -0 rm -f
++ debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge and ctime>$MinAge and mtime>$MinAge"
++elif [ $MaxAge -ne 0 ]; then
++ find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 | xargs -r -0 rm -f
++ debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge only"
++else
++ debug_echo "skip aging since MaxAge is 0"
fi
++
++# package archive contnts removal down to $MaxSize
++if [ $MaxSize -ne 0 ]; then
++
++ MinAgeSec=$(($MinAge*24*60*60))
++
++ # reverse-sort by mtime
++ for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
++ du=$(du -m -s $Cache)
++ size=${du%%/*}
++ # check if the cache is small enough
++ if [ $size -lt $MaxSize ]; then
++ debug_echo "end remove by archive size: size=$size < $MaxSize"
++ break
++ fi
--# sleep random amount of time
--random_sleep
++ # check for MinAge in second of the file
++ if [ $MinAgeSec -ne 0 ]; then
++ # check both ctime and mtime
++ mtime=$(stat -c %Y $file)
++ ctime=$(stat -c %Z $file)
++ if [ $mtime -gt $ctime ]; then
++ delta=$(($now-$mtime))
++ else
++ delta=$(($now-$ctime))
++ fi
++ if [ $delta -le $MinAgeSec ]; then
++ debug_echo "skip remove by archive size: $file, delta=$delta < $MinAgeSec"
++ else
++ # delete oldest file
++ debug_echo "remove by archive size: $file, delta=$delta >= $MinAgeSec (sec), size=$size >= $MaxSize"
++ rm -f $file
++ fi
++ fi
--# check again if we can access the cache
--if ! apt-get check -q -q 2>/dev/null; then
-- exit 1
++ done
fi
++# update package lists
UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
if check_stamp $UPDATE_STAMP $UpdateInterval; then
-- if apt-get -qq update 2>/dev/null; then
++ if eval apt-get $XAPTOPT -y update $XSTDERR; then
++ debug_echo "download updated metadata (success)."
if which dbus-send >/dev/null; then
-- dbus-send --system / app.apt.dbus.updated boolean:true
++ if dbus-send --system / app.apt.dbus.updated boolean:true ; then
++ debug_echo "send dbus signal (success)"
++ else
++ debug_echo "send dbus signal (error)"
++ fi
++ else
++ debug_echo "dbus signal not send (command not available)"
fi
-- update_stamp $UPDATE_STAMP
++ update_stamp $UPDATE_STAMP
++ # download all upgradeable packages if it is requested
++ DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
++ if check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
++ if eval apt-get $XAPTOPT -y -d dist-upgrade $XSTDERR; then
++ update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
++ debug_echo "download upgradable (success)."
++ # auto upgrade all upgradeable packages
++ UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
++ if which unattended-upgrade >/dev/null && check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
++ if unattended-upgrade $XUUPOPT; then
++ update_stamp $UPGRADE_STAMP
++ debug_echo "unattended-upgrade (success)."
++ else
++ debug_echo "unattended-upgrade (error)."
++ fi
++ else
++ debug_echo "unattended-upgrade (not run)."
++ fi
++ else
++ debug_echo "download upgradable (error)."
++ fi
++ else
++ debug_echo "download upgradable (not run)."
++ fi
++ else
++ debug_echo "download updated metadata (error)."
fi
++else
++ debug_echo "download updated metadata (not run)."
fi
--DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
--if check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
-- apt-get -qq -d dist-upgrade 2>/dev/null
-- update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
--fi
--
--UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
--if check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
-- unattended-upgrade
-- update_stamp $UPGRADE_STAMP
--fi
--
++# autoclean package archive
AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp
if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then
-- apt-get -qq autoclean
-- update_stamp $AUTOCLEAN_STAMP
++ if apt-get $XAPTOPT -y autoclean $XSTDERR; then
++ debug_echo "autoclean (success)."
++ update_stamp $AUTOCLEAN_STAMP
++ else
++ debug_echo "autoclean (error)."
++ fi
++else
++ debug_echo "autoclean (not run)."
fi
--# check cache size
--check_size_constraints
++#
++# vim: set sts=4 ai :
++#
++
projects / apt.git / commitdiff
