#!/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::Enable "1";
+# - Enable the update/upgrade script (0=disable)
+#
+# 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::Download-Upgradeable-Packages-Debdelta "1";
+# - Use debdelta-upgrade to download updates if available (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
+ 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=$(date --iso-8601) +%s)
+ stamp_file="$stamp"
+ stamp=$(date --date=$(date -r $stamp_file --iso-8601) +%s 2>/dev/null)
+ if [ "$?" != "0" ]; then
+ # Due to some timezones returning 'invalid date' for midnight on
+ # certain dates (eg America/Sao_Paulo), if date returns with error
+ # remove the stamp file and return 0. See coreutils bug:
+ # http://lists.gnu.org/archive/html/bug-coreutils/2007-09/msg00176.html
+ rm -f "$stamp_file"
+ return 0
+ fi
+
+ now=$(date --date=$(date --iso-8601) +%s 2>/dev/null)
+ if [ "$?" != "0" ]; then
+ # As above, due to some timezones returning 'invalid date' for midnight
+ # on certain dates (eg America/Sao_Paulo), if date returns with error
+ # return 0.
+ return 0
+ fi
+
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)"
+
+ # remove timestamps a day (or more) in the future and force re-check
+ if [ $stamp -gt $(($now+86400)) ]; then
+ echo "WARNING: file $stamp_file has a timestamp in the future: $stamp"
+ rm -f "$stamp_file"
+ return 0
+ fi
if [ $delta -ge $interval ]; then
return 0
update_stamp()
{
stamp="$1"
-
touch $stamp
}
-
-
# we check here if autoclean was enough sizewise
check_size_constraints()
{
- # 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 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 Dir Dir)
+ eval $(apt-config shell MaxSize APT::Periodic::MaxSize)
+
+ CacheDir="var/cache/apt/"
eval $(apt-config shell CacheDir Dir::Cache)
+ CacheDir=${CacheDir%/}
+
+ CacheArchive="archives/"
eval $(apt-config shell CacheArchive Dir::Cache::archives)
+ CacheArchive=${CacheArchive%/}
# sanity check
if [ -z "$CacheDir" -o -z "$CacheArchive" ]; then
# check age
if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
+ debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge and ctime>$MinAge and mtime>$MinAge"
find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 | xargs -r -0 rm -f
elif [ ! $MaxAge -eq 0 ]; then
+ debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge only"
find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 | xargs -r -0 rm -f
+ else
+ debug_echo "skip aging since MaxAge is 0"
fi
# check size
size=${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
# check for MinAge of the file
- if [ ! $MinAge -eq 0 ]; then
+ if [ $MinAge -ne 0 ]; then
# check both ctime and mtime
mtime=$(stat -c %Y $file)
ctime=$(stat -c %Z $file)
else
delta=$(($now-$ctime))
fi
- #echo "$file ($delta), $MinAge"
if [ $delta -le $MinAge ]; then
- #echo "Skiping $file (delta=$delta)"
+ debug_echo "skip remove by archive size: $file, delta=$delta < $MinAgeSec"
break
+ else
+ # delete oldest file
+ debug_echo "remove by archive size: $file, delta=$delta >= $MinAgeSec (sec), size=$size >= $MaxSize"
+ rm -f $file
fi
fi
-
- # delete oldest file
- rm -f $file
done
fi
}
-if ! which apt-config >/dev/null; then
+# deal with the Apt::Periodic::BackupArchiveInterval
+do_cache_backup()
+{
+ BackupArchiveInterval="$1"
+ if [ $BackupArchiveInterval -eq 0 ]; then
+ return
+ fi
+
+ # 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"
+ return 0
+ fi
+
+ CacheArchive="archives/"
+ eval $(apt-config shell CacheArchive Dir::Cache::Archives)
+ CacheArchive=${CacheArchive%/}
+ if [ -z "$CacheArchive" ]; then
+ debug_echo "practically empty Dir::Cache::archives, exiting"
+ return 0
+ fi
+
+ BackupLevel=3
+ eval $(apt-config shell BackupLevel APT::Periodic::BackupLevel)
+ if [ $BackupLevel -le 1 ]; then
+ BackupLevel=2 ;
+ fi
+
+ CacheBackup="backup/"
+ eval $(apt-config shell CacheBackup Dir::Cache::Backup)
+ CacheBackup=${CacheBackup%/}
+ if [ -z "$CacheBackup" ]; then
+ echo "practically empty Dir::Cache::Backup, exiting" 1>&2
+ return
+ fi
+
+ Cache="${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
+ debug_echo "skip backup since same content."
+ fi
+ else
+ debug_echo "skip backup since too new."
+ fi
+}
+
+# sleep for a random interval 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))
+ debug_echo "sleeping for $TIME seconds"
+ sleep $TIME
+}
+
+
+debug_echo()
+{
+ # Display message if $VERBOSE >= 1
+ if [ "$VERBOSE" -ge 1 ]; then
+ echo $1 1>&2
+ fi
+}
+
+# ------------------------ main ----------------------------
+
+# check apt-config exstance
+if ! which apt-config >/dev/null ; then
exit 0
fi
-UpdateInterval=0
-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)
+# check if the user really wants to do something
+AutoAptEnable=1 # default is yes
+eval $(apt-config shell AutoAptEnable APT::Periodic::Enable)
-UnattendedUpgradeInterval=0
-eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
+if [ $AutoAptEnable -eq 0 ]; then
+ exit 0
+fi
+# Set VERBOSE mode from apt-config (or inherit from environment)
+VERBOSE=0
+eval $(apt-config shell VERBOSE APT::Periodic::Verbose)
+debug_echo "verbose level $VERBOSE"
+if [ "$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 mains power
-# 1 (false) System is not on mains power
+# 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
- if [ $? -eq 1 ]; then
+ POWER=$?
+ if [ $POWER -eq 1 ]; then
+ debug_echo "exit: system NOT on main power"
exit 0
+ elif [ $POWER -ne 0 ]; then
+ debug_echo "power status ($POWER) undetermined, continuing"
fi
+ debug_echo "system is on main power."
fi
# check if we can lock the cache and if the cache is clean
-if ! apt-get check -q -q 2>/dev/null; then
- echo "$0: could not lock the APT cache"
- exit 1
+if which apt-get >/dev/null && ! eval apt-get check -f $XAPTOPT $XSTDERR ; then
+ debug_echo "error encountered in cron job with \"apt-get check\"."
+ exit 0
+fi
+
+# Global current time in seconds since 1970-01-01 00:00:00 UTC
+now=$(date +%s)
+
+# Support old Archive for compatibility.
+# Document only Periodic for all controling parameters of this script.
+
+UpdateInterval=0
+eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists)
+
+DownloadUpgradeableInterval=0
+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)
+
+BackupArchiveInterval=0
+eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)
+
+Debdelta=1
+eval $(apt-config shell Debdelta APT::Periodic::Download-Upgradeable-Packages-Debdelta)
+
+# check if we actually have to do anything that requires locking the cache
+if [ $UpdateInterval -eq 0 ] &&
+ [ $DownloadUpgradeableInterval -eq 0 ] &&
+ [ $UnattendedUpgradeInterval -eq 0 ] &&
+ [ $BackupArchiveInterval -eq 0 ] &&
+ [ $AutocleanInterval -eq 0 ]; then
+
+ # check cache size
+ check_size_constraints
+
+ exit 0
fi
+# deal with BackupArchiveInterval
+do_cache_backup $BackupArchiveInterval
+
+# sleep random amount of time to avoid hitting the
+# mirrors at the same time
+random_sleep
+# update package lists
+UPDATED=0
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 which dbus-send >/dev/null; then
- dbus-send --system / app.apt.dbus.updated boolean:true
+ if eval apt-get $XAPTOPT -y update $XSTDERR; then
+ debug_echo "download updated metadata (success)."
+ if which dbus-send >/dev/null && pidof dbus-daemon >/dev/null; then
+ 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
+ UPDATED=1
+ else
+ debug_echo "download updated metadata (error)"
fi
+else
+ debug_echo "download updated metadata (not run)."
fi
-
+
+# 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
- apt-get -qq -d dist-upgrade 2>/dev/null
- update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
+if [ $UPDATED -eq 1 ] && check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
+ if [ $Debdelta -eq 1 ]; then
+ debdelta-upgrade >/dev/null 2>&1 || true
+ fi
+ if eval apt-get $XAPTOPT -y -d dist-upgrade $XSTDERR; then
+ update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
+ debug_echo "download upgradable (success)"
+ else
+ debug_echo "download upgradable (error)"
+ fi
+else
+ debug_echo "download upgradable (not run)"
fi
+# auto upgrade all upgradeable packages
UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
-if check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
- unattended-upgrade
- update_stamp $UPGRADE_STAMP
+if [ $UPDATED -eq 1 ] && 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
+# 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 eval 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 / blobdiff