[apt.git] / debian / apt.cron.daily

#!/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.
#
#  Dir "/";
#  - RootDir for all configuration files
#
#  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::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::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::Archives::MaxAge",
#  - Set maximum allowed age of a cache package file. If a cache 
#    package file is older it is deleted (0=disable)
#
#  "APT::Archives::MaxSize",
#  - 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.
# 

check_stamp()
{
    stamp="$1"
    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_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,
    interval=$(($interval*60*60*24))
    #echo "stampfile: $1"
    #echo "interval=$interval, now=$now, stamp=$stamp, delta=$delta"

    # 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

    # 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
    fi

    return 1
}

update_stamp()
{
    stamp="$1"

    touch $stamp
}

# we check here if autoclean was enough sizewise
check_size_constraints()
{
    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)

    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
	echo "empty Dir::Cache or Dir::Cache::archives, exiting"
	exit
    fi
    
    Cache="${Dir%/}/${CacheDir%/}/${CacheArchive%/}/"

    # 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
    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 $MaxSize ]; then
		debug_echo "end remove by archive size:  size=$size < $MaxSize"
		break
	    fi

	    # check for MinAge of the file
	    if [ $MinAge -ne 0 ]; then 
		# check both ctime and mtime 
		mtime=$(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 $MinAge ]; then
		    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
	done
    fi
}

# 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

# check if the user really wants to do something
AutoAptEnable=1  # default is yes
eval $(apt-config shell AutoAptEnable APT::Periodic::Enable)

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 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 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 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
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)
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
if [ $UpdateInterval -eq 0 ] &&
   [ $DownloadUpgradeableInterval -eq 0 ] &&
   [ $UnattendedUpgradeInterval -eq 0 ] &&
   [ $AutocleanInterval -eq 0 ]; then
    exit 0
fi

# set the proxy based on the admin users gconf settings
admin_user=$(getent group admin|cut -d: -f4|cut -d, -f1)
if [ -n "$admin_user" ] && [ -x /usr/bin/sudo ] && [ -z "$http_proxy" ] && [ -x /usr/bin/gconftool ]; then
       use=$(sudo -u "$admin_user" gconftool --get /system/http_proxy/use_http_proxy 2>/dev/null)
       host=$(sudo -u "$admin_user" gconftool --get /system/http_proxy/host 2>/dev/null)
       port=$(sudo -u "$admin_user" gconftool --get /system/http_proxy/port 2>/dev/null)
       if [ "$use" = "true" ] && [ -n "$host" ] && [ -n "$port" ]; then
               export http_proxy="http://$host:$port/"
       fi
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
    # check for a new archive signing key (against the master keyring)
    if eval apt-key net-update $XSTDERR; then
	debug_echo "apt-key net-update (success)"
    else
	debug_echo "apt-key net-update (failure)"
    fi
    if eval apt-get $XAPTOPT -y update -o APT::Update::Auth-Failure::="cp /usr/share/apt/apt-auth-failure.note /var/lib/update-notifier/user.d/" $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
	UPDATED=1
	# now run apt-xapian-index if it is installed to ensure the index
	# is up-to-date
	if [ -x /usr/sbin/update-apt-xapian-index ]; then
	    ionice -c3 update-apt-xapian-index -q
	fi
    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 [ $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 [ $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
    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 :
#
Commit	Line	Data
0c132682 MZ	1	#!/bin/sh
0c132682 MZ	2	#
0c132682 MZ	3
0c132682 MZ	4	#set -e
8a139d4d MV	5	#
8a139d4d MV	6	# This file understands the following apt configuration variables:
ff7c76f8 OA	7	# Values here are the default.
ff7c76f8 OA	8	# Create /etc/apt/apt.conf.d/02periodic file to set your preference.
8a139d4d	9	#
ff7c76f8 OA	10	# Dir "/";
ff7c76f8 OA	11	# - RootDir for all configuration files
8a139d4d	12	#
ff7c76f8 OA	13	# Dir::Cache "var/apt/cache/";
	14	# - Set apt package cache directory
	15	#
	16	# Dir::Cache::Archive "archives/";
	17	# - Set package archive directory
	18	#
17443d48 JAK	19	# APT::Periodic::Enable "1";
	20	# - Enable the update/upgrade script (0=disable)
	21	#
ff7c76f8 OA	22	# APT::Periodic::BackupArchiveInterval "0";
	23	# - Backup after n-days if archive contents changed.(0=disable)
	24	#
	25	# APT::Periodic::BackupLevel "3";
	26	# - Backup level.(0=disable), 1 is invalid.
	27	#
	28	# Dir::Cache::Backup "backup/";
	29	# - Set periodic package backup directory
	30	#
	31	# APT::Archives::MaxAge "0"; (old, deprecated)
	32	# APT::Periodic::MaxAge "0"; (new)
8a139d4d MV	33	# - Set maximum allowed age of a cache package file. If a cache
	34	# package file is older it is deleted (0=disable)
	35	#
ff7c76f8 OA	36	# APT::Archives::MinAge "2"; (old, deprecated)
	37	# APT::Periodic::MinAge "2"; (new)
	38	# - Set minimum age of a package file. If a file is younger it
	39	# will not be deleted (0=disable). Usefull to prevent races
	40	# and to keep backups of the packages for emergency.
	41	#
	42	# APT::Archives::MaxSize "0"; (old, deprecated)
	43	# APT::Periodic::MaxSize "0"; (new)
8a139d4d MV	44	# - Set maximum size of the cache in MB (0=disable). If the cache
	45	# is bigger, cached package files are deleted until the size
	46	# requirement is met (the biggest packages will be deleted
	47	# first).
	48	#
ff7c76f8	49	# APT::Periodic::Update-Package-Lists "0";
8a139d4d MV	50	# - Do "apt-get update" automatically every n-days (0=disable)
	51	#
	52	# "APT::Periodic::Download-Upgradeable-Packages=0",
	53	# - Do "apt-get upgrade --download-only" every n-days (0=disable)
8a139d4d	54	#
6b519e42 JAK	55	# APT::Periodic::Download-Upgradeable-Packages-Debdelta "1";
	56	# - Use debdelta-upgrade to download updates if available (0=disable)
	57	#
ff7c76f8	58	# APT::Periodic::Unattended-Upgrade "0";
fdd15654 MV	59	# - Run the "unattended-upgrade" security upgrade script
	60	# every n-days (0=disabled)
	61	# Requires the package "unattended-upgrades" and will write
	62	# a log in /var/log/unattended-upgrades
	63	#
8a139d4d MV	64	# "APT::Archives::MaxAge",
	65	# - Set maximum allowed age of a cache package file. If a cache
	66	# package file is older it is deleted (0=disable)
	67	#
	68	# "APT::Archives::MaxSize",
	69	# - Set maximum size of the cache in MB (0=disable). If the cache
	70	# is bigger, cached package files are deleted until the size
	71	# requirement is met (the biggest packages will be deleted
	72	# first).
	73	#
	74	# "APT::Archives::MinAge"
	75	# - Set minimum age of a package file. If a file is younger it
	76	# will not be deleted (0=disable). Usefull to prevent races
	77	# and to keep backups of the packages for emergency.
	78	#
0c132682	79
05f6a46a	80	check_stamp()
0c132682	81	{
05f6a46a MZ	82	stamp="$1"
	83	interval="$2"
	84
10946ddc	85	if [ $interval -eq 0 ]; then
53391d0f	86	debug_echo "check_stamp: interval=0"
ff7c76f8	87	# treat as no time has passed
10946ddc MZ	88	return 1
	89	fi
	90
05f6a46a	91	if [ ! -f $stamp ]; then
ff7c76f8 OA	92	debug_echo "check_stamp: missing time stamp file: $stamp."
ff7c76f8 OA	93	# treat as enough time has passed
05f6a46a	94	return 0
0c132682	95	fi
05f6a46a MZ	96
05f6a46a MZ	97	# compare midnight today to midnight the day the stamp was updated
9c2d35fa MV	98	stamp_file="$stamp"
	99	stamp=$(date --date=$(date -r $stamp_file --iso-8601) +%s 2>/dev/null)
	100	if [ "$?" != "0" ]; then
	101	# Due to some timezones returning 'invalid date' for midnight on
	102	# certain dates (eg America/Sao_Paulo), if date returns with error
	103	# remove the stamp file and return 0. See coreutils bug:
	104	# http://lists.gnu.org/archive/html/bug-coreutils/2007-09/msg00176.html
	105	rm -f "$stamp_file"
	106	return 0
	107	fi
	108
	109	now=$(date --date=$(date --iso-8601) +%s 2>/dev/null)
	110	if [ "$?" != "0" ]; then
	111	# As above, due to some timezones returning 'invalid date' for midnight
	112	# on certain dates (eg America/Sao_Paulo), if date returns with error
	113	# return 0.
	114	return 0
	115	fi
	116
05f6a46a	117	delta=$(($now-$stamp))
05f6a46a	118
8a139d4d MV	119	# intervall is in days,
	120	interval=$(($interval6060*24))
	121	#echo "stampfile: $1"
	122	#echo "interval=$interval, now=$now, stamp=$stamp, delta=$delta"
	123
adbce121 MV	124	# remove timestamps a day (or more) in the future and force re-check
	125	if [ $stamp -gt $(($now+86400)) ]; then
	126	echo "WARNING: file $stamp_file has a timestamp in the future: $stamp"
	127	rm -f "$stamp_file"
	128	return 0
	129	fi
	130
6e7c6c3f MV	131	# remove timestamps a day (or more) in the future and force re-check
	132	if [ $stamp -gt $(($now+86400)) ]; then
	133	echo "WARNING: file $stamp_file has a timestamp in the future: $stamp"
	134	rm -f "$stamp_file"
	135	return 0
	136	fi
	137
05f6a46a MZ	138	if [ $delta -ge $interval ]; then
	139	return 0
	140	fi
	141
	142	return 1
	143	}
	144
	145	update_stamp()
	146	{
	147	stamp="$1"
	148
	149	touch $stamp
0c132682 MZ	150	}
0c132682 MZ	151
6cce801a	152	# we check here if autoclean was enough sizewise
2e8a92e5	153	check_size_constraints()
6cce801a	154	{
6cce801a	155	MaxAge=0
6cce801a	156	eval $(apt-config shell MaxAge APT::Archives::MaxAge)
c98870b0 MV	157	eval $(apt-config shell MaxAge APT::Periodic::MaxAge)
	158
	159	MinAge=2
8a139d4d	160	eval $(apt-config shell MinAge APT::Archives::MinAge)
c98870b0 MV	161	eval $(apt-config shell MinAge APT::Periodic::MinAge)
	162
	163	MaxSize=0
6cce801a	164	eval $(apt-config shell MaxSize APT::Archives::MaxSize)
c98870b0 MV	165	eval $(apt-config shell MaxSize APT::Periodic::MaxSize)
	166
	167	CacheDir="var/cache/apt/"
6cce801a	168	eval $(apt-config shell CacheDir Dir::Cache)
c98870b0 MV	169	CacheDir=${CacheDir%/}
	170
	171	CacheArchive="archives/"
6cce801a	172	eval $(apt-config shell CacheArchive Dir::Cache::archives)
c98870b0	173	CacheArchive=${CacheArchive%/}
6cce801a MV	174
	175	# sanity check
	176	if [ -z "$CacheDir" -o -z "$CacheArchive" ]; then
	177	echo "empty Dir::Cache or Dir::Cache::archives, exiting"
	178	exit
	179	fi
01717245 MV	180
01717245 MV	181	Cache="${Dir%/}/${CacheDir%/}/${CacheArchive%/}/"
6cce801a MV	182
6cce801a MV	183	# check age
8a139d4d	184	if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
c98870b0	185	debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge and ctime>$MinAge and mtime>$MinAge"
8e29e348	186	find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 \| xargs -r -0 rm -f
8a139d4d	187	elif [ ! $MaxAge -eq 0 ]; then
c98870b0	188	debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge only"
8e29e348	189	find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 \| xargs -r -0 rm -f
c98870b0 MV	190	else
c98870b0 MV	191	debug_echo "skip aging since MaxAge is 0"
6cce801a MV	192	fi
	193
	194	# check size
	195	if [ ! $MaxSize -eq 0 ]; then
8a139d4d MV	196	# maxSize is in MB
	197	MaxSize=$(($MaxSize*1024))
	198
	199	#get current time
	200	now=$(date --date=$(date --iso-8601) +%s)
	201	MinAge=$(($MinAge2460*60))
	202
6cce801a	203	# reverse-sort by mtime
3408b58c	204	for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
6cce801a MV	205	du=$(du -s $Cache)
	206	size=${du%%/*}
	207	# check if the cache is small enough
	208	if [ $size -lt $MaxSize ]; then
c98870b0	209	debug_echo "end remove by archive size: size=$size < $MaxSize"
6cce801a MV	210	break
6cce801a MV	211	fi
8a139d4d MV	212
8a139d4d MV	213	# check for MinAge of the file
c98870b0	214	if [ $MinAge -ne 0 ]; then
8e29e348	215	# check both ctime and mtime
3971f8e8	216	mtime=$(stat -c %Y $file)
8e29e348 MV	217	ctime=$(stat -c %Z $file)
	218	if [ $mtime -gt $ctime ]; then
	219	delta=$(($now-$mtime))
	220	else
	221	delta=$(($now-$ctime))
	222	fi
8a139d4d	223	if [ $delta -le $MinAge ]; then
c98870b0	224	debug_echo "skip remove by archive size: $file, delta=$delta < $MinAgeSec"
3408b58c	225	break
c98870b0 MV	226	else
	227	# delete oldest file
	228	debug_echo "remove by archive size: $file, delta=$delta >= $MinAgeSec (sec), size=$size >= $MaxSize"
	229	rm -f $file
8a139d4d MV	230	fi
8a139d4d MV	231	fi
6cce801a MV	232	done
	233	fi
	234	}
	235
c98870b0 MV	236	# deal with the Apt::Periodic::BackupArchiveInterval
	237	do_cache_backup()
	238	{
	239	BackupArchiveInterval="$1"
	240	if [ $BackupArchiveInterval -eq 0 ]; then
	241	return
	242	fi
	243
	244	# Set default values and normalize
	245	Dir="/"
	246	eval $(apt-config shell Dir Dir)
	247	Dir=${Dir%/}
	248
	249	CacheDir="var/cache/apt/"
	250	eval $(apt-config shell CacheDir Dir::Cache)
	251	CacheDir=${CacheDir%/}
	252	if [ -z "$CacheDir" ]; then
	253	debug_echo "practically empty Dir::Cache, exiting"
	254	return 0
	255	fi
	256
	257	CacheArchive="archives/"
	258	eval $(apt-config shell CacheArchive Dir::Cache::Archives)
	259	CacheArchive=${CacheArchive%/}
	260	if [ -z "$CacheArchive" ]; then
	261	debug_echo "practically empty Dir::Cache::archives, exiting"
	262	return 0
	263	fi
	264
	265	BackupLevel=3
	266	eval $(apt-config shell BackupLevel APT::Periodic::BackupLevel)
	267	if [ $BackupLevel -le 1 ]; then
	268	BackupLevel=2 ;
	269	fi
	270
	271	CacheBackup="backup/"
	272	eval $(apt-config shell CacheBackup Dir::Cache::Backup)
	273	CacheBackup=${CacheBackup%/}
	274	if [ -z "$CacheBackup" ]; then
	275	echo "practically empty Dir::Cache::Backup, exiting" 1>&2
	276	return
	277	fi
	278
	279	Cache="${Dir}/${CacheDir}/${CacheArchive}/"
	280	Back="${Dir}/${CacheDir}/${CacheBackup}/"
	281	BackX="${Back}${CacheArchive}/"
	282	for x in $(seq 0 1 $((${BackupLevel}-1))); do
	283	eval "Back${x}=${Back}${x}/"
	284	done
	285
	286	# backup after n-days if archive contents changed.
	287	# (This uses hardlink to save disk space)
	288	BACKUP_ARCHIVE_STAMP=/var/lib/apt/periodic/backup-archive-stamp
	289	if check_stamp $BACKUP_ARCHIVE_STAMP $BackupArchiveInterval; then
	290	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
	291	mkdir -p $Back
	292	rm -rf $Back$((${BackupLevel}-1))
	293	for y in $(seq $((${BackupLevel}-1)) -1 1); do
	294	eval BackY=${Back}$y
	295	eval BackZ=${Back}$(($y-1))
	296	if [ -e $BackZ ]; then
	297	mv -f $BackZ $BackY ;
	298	fi
	299	done
300	cp -la $Cache $Back ; mv -f $BackX $Back0
301	update_stamp $BACKUP_ARCHIVE_STAMP
302	debug_echo "backup with hardlinks. (success)"
303	else
304	debug_echo "skip backup since same content."
305	fi
306	else
307	debug_echo "skip backup since too new."
308	fi
309	}
310
d047c6da	311	# sleep for a random interval of time (default 30min)
604c9ee8 MV	312	# (some code taken from cron-apt, thanks)
	313	random_sleep()
	314	{
	315	RandomSleep=1800
	316	eval $(apt-config shell RandomSleep APT::Periodic::RandomSleep)
	317	if [ $RandomSleep -eq 0 ]; then
	318	return
	319	fi
	320	if [ -z "$RANDOM" ] ; then
	321	# A fix for shells that do not have this bash feature.
	322	RANDOM=$(dd if=/dev/urandom count=1 2> /dev/null \| cksum \| cut -c"1-5")
	323	fi
	324	TIME=$(($RANDOM % $RandomSleep))
c98870b0	325	debug_echo "sleeping for $TIME seconds"
604c9ee8 MV	326	sleep $TIME
	327	}
	328
604c9ee8	329
ff7c76f8	330	debug_echo()
6cce801a	331	{
ff7c76f8 OA	332	# Display message if $VERBOSE >= 1
	333	if [ "$VERBOSE" -ge 1 ]; then
	334	echo $1 1>&2
6cce801a	335	fi
ff7c76f8 OA	336	}
ff7c76f8 OA	337
c98870b0	338	# ------------------------ main ----------------------------
69c28efc	339
ff7c76f8 OA	340	# check apt-config exstance
ff7c76f8 OA	341	if ! which apt-config >/dev/null ; then
18d38975 OS	342	exit 0
18d38975 OS	343	fi
87ddfb96	344
17443d48 JAK	345	# check if the user really wants to do something
	346	AutoAptEnable=1 # default is yes
	347	eval $(apt-config shell AutoAptEnable APT::Periodic::Enable)
	348
9a64707c	349	if [ $AutoAptEnable -eq 0 ]; then
17443d48 JAK	350	exit 0
	351	fi
	352
ff7c76f8	353	# Set VERBOSE mode from apt-config (or inherit from environment)
6985efb3	354	VERBOSE=0
ff7c76f8	355	eval $(apt-config shell VERBOSE APT::Periodic::Verbose)
c98870b0	356	debug_echo "verbose level $VERBOSE"
ff7c76f8 OA	357	if [ "$VERBOSE" -le 2 ]; then
	358	# quiet for 0,1,2
	359	XSTDOUT=">/dev/null"
	360	XSTDERR="2>/dev/null"
	361	XAPTOPT="-qq"
	362	XUUPOPT=""
	363	else
	364	XSTDOUT=""
	365	XSTDERR=""
	366	XAPTOPT=""
	367	XUUPOPT="-d"
	368	fi
	369	if [ "$VERBOSE" -ge 3 ]; then
	370	# trace output
	371	set -x
	372	fi
8a139d4d	373
ff7c76f8 OA	374	# laptop check, on_ac_power returns:
	375	# 0 (true) System is on main power
	376	# 1 (false) System is not on main power
	377	# 255 (false) Power status could not be determined
	378	# Desktop systems always return 255 it seems
	379	if which on_ac_power >/dev/null; then
	380	on_ac_power
	381	POWER=$?
	382	if [ $POWER -eq 1 ]; then
c98870b0	383	debug_echo "exit: system NOT on main power"
18d38975	384	exit 0
ff7c76f8	385	elif [ $POWER -ne 0 ]; then
c98870b0	386	debug_echo "power status ($POWER) undetermined, continuing"
6cce801a	387	fi
ff7c76f8 OA	388	debug_echo "system is on main power."
ff7c76f8 OA	389	fi
8a139d4d	390
ff7c76f8	391	# check if we can lock the cache and if the cache is clean
aff278bf	392	if which apt-get >/dev/null && ! eval apt-get check -f $XAPTOPT $XSTDERR ; then
ff7c76f8 OA	393	debug_echo "error encountered in cron job with \"apt-get check\"."
ff7c76f8 OA	394	exit 0
18d38975	395	fi
87ddfb96	396
ff7c76f8 OA	397	# Global current time in seconds since 1970-01-01 00:00:00 UTC
ff7c76f8 OA	398	now=$(date +%s)
6cce801a	399
ff7c76f8 OA	400	# Support old Archive for compatibility.
ff7c76f8 OA	401	# Document only Periodic for all controling parameters of this script.
ff7c76f8	402
0c132682	403	UpdateInterval=0
05f6a46a	404	DownloadUpgradeableInterval=0
9bd1cf87 MZ	405	eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
9bd1cf87 MZ	406	AutocleanInterval=$DownloadUpgradeableInterval
0eb7056b	407	eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
fdd15654 MV	408	UnattendedUpgradeInterval=0
	409	eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
	410
ff7c76f8 OA	411	AutocleanInterval=0
	412	eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
	413
c98870b0 MV	414	BackupArchiveInterval=0
c98870b0 MV	415	eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)
ff7c76f8	416
6b519e42 JAK	417	Debdelta=1
	418	eval $(apt-config shell Debdelta APT::Periodic::Download-Upgradeable-Packages-Debdelta)
	419
5f71505b MV	420	# check if we actually have to do anything
	421	if [ $UpdateInterval -eq 0 ] &&
	422	[ $DownloadUpgradeableInterval -eq 0 ] &&
	423	[ $UnattendedUpgradeInterval -eq 0 ] &&
	424	[ $AutocleanInterval -eq 0 ]; then
	425	exit 0
	426	fi
fdd15654	427
55fb35e8 MV	428	# set the proxy based on the admin users gconf settings
	429	admin_user=$(getent group admin\|cut -d: -f4\|cut -d, -f1)
	430	if [ -n "$admin_user" ] && [ -x /usr/bin/sudo ] && [ -z "$http_proxy" ] && [ -x /usr/bin/gconftool ]; then
	431	use=$(sudo -u "$admin_user" gconftool --get /system/http_proxy/use_http_proxy 2>/dev/null)
	432	host=$(sudo -u "$admin_user" gconftool --get /system/http_proxy/host 2>/dev/null)
	433	port=$(sudo -u "$admin_user" gconftool --get /system/http_proxy/port 2>/dev/null)
	434	if [ "$use" = "true" ] && [ -n "$host" ] && [ -n "$port" ]; then
	435	export http_proxy="http://$host:$port/"
	436	fi
0c132682 MZ	437	fi
0c132682 MZ	438
55fb35e8	439
c98870b0 MV	440	# deal with BackupArchiveInterval
c98870b0 MV	441	do_cache_backup $BackupArchiveInterval
0c132682	442
5f71505b MV	443	# sleep random amount of time to avoid hitting the
5f71505b MV	444	# mirrors at the same time
69c28efc MV	445	random_sleep
69c28efc MV	446
ff7c76f8	447	# update package lists
aff278bf	448	UPDATED=0
05f6a46a MZ	449	UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
05f6a46a MZ	450	if check_stamp $UPDATE_STAMP $UpdateInterval; then
2ce23a2a	451	# check for a new archive signing key (against the master keyring)
55fb35e8 MV	452	if eval apt-key net-update $XSTDERR; then
	453	debug_echo "apt-key net-update (success)"
	454	else
	455	debug_echo "apt-key net-update (failure)"
	456	fi
	457	if eval apt-get $XAPTOPT -y update -o APT::Update::Auth-Failure::="cp /usr/share/apt/apt-auth-failure.note /var/lib/update-notifier/user.d/" $XSTDERR; then
ff7c76f8	458	debug_echo "download updated metadata (success)."
be993931	459	if which dbus-send >/dev/null && pidof dbus-daemon >/dev/null; then
ff7c76f8 OA	460	if dbus-send --system / app.apt.dbus.updated boolean:true ; then
	461	debug_echo "send dbus signal (success)"
	462	else
	463	debug_echo "send dbus signal (error)"
	464	fi
	465	else
	466	debug_echo "dbus signal not send (command not available)"
05f6a46a	467	fi
ff7c76f8	468	update_stamp $UPDATE_STAMP
aff278bf	469	UPDATED=1
c2d0fdd1 MV	470	# now run apt-xapian-index if it is installed to ensure the index
	471	# is up-to-date
	472	if [ -x /usr/sbin/update-apt-xapian-index ]; then
	473	ionice -c3 update-apt-xapian-index -q
	474	fi
ff7c76f8	475	else
c98870b0	476	debug_echo "download updated metadata (error)"
05f6a46a	477	fi
ff7c76f8 OA	478	else
ff7c76f8 OA	479	debug_echo "download updated metadata (not run)."
0c132682	480	fi
c98870b0 MV	481
c98870b0 MV	482	# download all upgradeable packages (if it is requested)
05f6a46a	483	DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
aff278bf	484	if [ $UPDATED -eq 1 ] && check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
6b519e42 JAK	485	if [ $Debdelta -eq 1 ]; then
	486	debdelta-upgrade >/dev/null 2>&1 \|\| true
	487	fi
c98870b0 MV	488	if eval apt-get $XAPTOPT -y -d dist-upgrade $XSTDERR; then
	489	update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
	490	debug_echo "download upgradable (success)"
	491	else
	492	debug_echo "download upgradable (error)"
	493	fi
	494	else
	495	debug_echo "download upgradable (not run)"
0c132682	496	fi
9bd1cf87	497
c98870b0	498	# auto upgrade all upgradeable packages
fdd15654	499	UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
aff278bf	500	if [ $UPDATED -eq 1 ] && which unattended-upgrade >/dev/null && check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
c98870b0 MV	501	if unattended-upgrade $XUUPOPT; then
	502	update_stamp $UPGRADE_STAMP
	503	debug_echo "unattended-upgrade (success)"
	504	else
	505	debug_echo "unattended-upgrade (error)"
	506	fi
	507	else
	508	debug_echo "unattended-upgrade (not run)"
fdd15654 MV	509	fi
fdd15654 MV	510
ff7c76f8	511	# autoclean package archive
de15fbae MV	512	AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp
de15fbae MV	513	if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then
c98870b0	514	if eval apt-get $XAPTOPT -y autoclean $XSTDERR; then
ff7c76f8 OA	515	debug_echo "autoclean (success)."
	516	update_stamp $AUTOCLEAN_STAMP
	517	else
c98870b0	518	debug_echo "autoclean (error)"
ff7c76f8 OA	519	fi
ff7c76f8 OA	520	else
c98870b0	521	debug_echo "autoclean (not run)"
de15fbae MV	522	fi
de15fbae MV	523
47536509 MV	524	# check cache size
47536509 MV	525	check_size_constraints
0fad7309	526
ff7c76f8 OA	527	#
	528	# vim: set sts=4 ai :
	529	#
	530