[ntk/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::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::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()
{
    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, convert to sec.
    interval=$(($interval*60*60*24))
    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
    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

# 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
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)

# check if we actually have to do anything
if [ $UpdateInterval -eq 0 ] &&
   [ $DownloadUpgradeableInterval -eq 0 ] &&
   [ $UnattendedUpgradeInterval -eq 0 ] &&
   [ $BackupArchiveInterval -eq 0 ] &&
   [ $AutocleanInterval -eq 0 ]; then
    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 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
	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 [ $UPDATED -eq 1 ] && 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)"
    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	1	#!/bin/sh
0c132682	2	#set -e
8a139d4d MV	3	#
8a139d4d MV	4	# This file understands the following apt configuration variables:
ff7c76f8 OA	5	# Values here are the default.
ff7c76f8 OA	6	# Create /etc/apt/apt.conf.d/02periodic file to set your preference.
8a139d4d	7	#
ff7c76f8 OA	8	# Dir "/";
ff7c76f8 OA	9	# - RootDir for all configuration files
8a139d4d	10	#
ff7c76f8 OA	11	# Dir::Cache "var/apt/cache/";
	12	# - Set apt package cache directory
	13	#
	14	# Dir::Cache::Archive "archives/";
	15	# - Set package archive directory
	16	#
	17	# APT::Periodic::BackupArchiveInterval "0";
	18	# - Backup after n-days if archive contents changed.(0=disable)
	19	#
	20	# APT::Periodic::BackupLevel "3";
	21	# - Backup level.(0=disable), 1 is invalid.
	22	#
	23	# Dir::Cache::Backup "backup/";
	24	# - Set periodic package backup directory
	25	#
	26	# APT::Archives::MaxAge "0"; (old, deprecated)
	27	# APT::Periodic::MaxAge "0"; (new)
8a139d4d MV	28	# - Set maximum allowed age of a cache package file. If a cache
	29	# package file is older it is deleted (0=disable)
	30	#
ff7c76f8 OA	31	# APT::Archives::MinAge "2"; (old, deprecated)
	32	# APT::Periodic::MinAge "2"; (new)
	33	# - Set minimum age of a package file. If a file is younger it
	34	# will not be deleted (0=disable). Usefull to prevent races
	35	# and to keep backups of the packages for emergency.
	36	#
	37	# APT::Archives::MaxSize "0"; (old, deprecated)
	38	# APT::Periodic::MaxSize "0"; (new)
8a139d4d MV	39	# - Set maximum size of the cache in MB (0=disable). If the cache
	40	# is bigger, cached package files are deleted until the size
	41	# requirement is met (the biggest packages will be deleted
	42	# first).
	43	#
ff7c76f8 OA	44	# APT::Periodic::Update-Package-Lists "0";
	45	# - Do "apt-get update" automatically every n-days (0=disable)
	46	#
	47	# APT::Periodic::Download-Upgradeable-Packages "0";
	48	# - Do "apt-get upgrade --download-only" every n-days (0=disable)
8a139d4d	49	#
ff7c76f8 OA	50	# APT::Periodic::Unattended-Upgrade "0";
	51	# - Run the "unattended-upgrade" security upgrade script
	52	# every n-days (0=disabled)
	53	# Requires the package "unattended-upgrades" and will write
	54	# a log in /var/log/unattended-upgrades
8a139d4d	55	#
ff7c76f8 OA	56	# APT::Periodic::AutocleanInterval "0";
	57	# - Do "apt-get autoclean" every n-days (0=disable)
	58	#
	59	# APT::Periodic::Verbose "0";
	60	# - Send report mail to root
	61	# 0: no report (or null string)
	62	# 1: progress report (actually any string)
	63	# 2: + command outputs (remove -qq, remove 2>/dev/null, add -d)
	64	# 3: + trace on
0c132682	65
05f6a46a	66	check_stamp()
0c132682	67	{
05f6a46a MZ	68	stamp="$1"
	69	interval="$2"
	70
10946ddc	71	if [ $interval -eq 0 ]; then
53391d0f	72	debug_echo "check_stamp: interval=0"
ff7c76f8	73	# treat as no time has passed
10946ddc MZ	74	return 1
	75	fi
	76
05f6a46a	77	if [ ! -f $stamp ]; then
ff7c76f8 OA	78	debug_echo "check_stamp: missing time stamp file: $stamp."
ff7c76f8 OA	79	# treat as enough time has passed
05f6a46a	80	return 0
0c132682	81	fi
05f6a46a MZ	82
05f6a46a MZ	83	# compare midnight today to midnight the day the stamp was updated
a7c526b6 MV	84	stamp_file="$stamp"
	85	stamp=$(date --date=$(date -r $stamp_file --iso-8601) +%s 2>/dev/null)
	86	if [ "$?" != "0" ]; then
	87	# Due to some timezones returning 'invalid date' for midnight on
	88	# certain dates (eg America/Sao_Paulo), if date returns with error
	89	# remove the stamp file and return 0. See coreutils bug:
	90	# http://lists.gnu.org/archive/html/bug-coreutils/2007-09/msg00176.html
	91	rm -f "$stamp_file"
	92	return 0
	93	fi
	94
	95	now=$(date --date=$(date --iso-8601) +%s 2>/dev/null)
	96	if [ "$?" != "0" ]; then
	97	# As above, due to some timezones returning 'invalid date' for midnight
	98	# on certain dates (eg America/Sao_Paulo), if date returns with error
	99	# return 0.
	100	return 0
	101	fi
	102
05f6a46a	103	delta=$(($now-$stamp))
05f6a46a	104
ff7c76f8	105	# intervall is in days, convert to sec.
8a139d4d	106	interval=$(($interval6060*24))
ff7c76f8	107	debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp, delta=$delta (sec)"
8a139d4d	108
6e7c6c3f MV	109	# remove timestamps a day (or more) in the future and force re-check
	110	if [ $stamp -gt $(($now+86400)) ]; then
	111	echo "WARNING: file $stamp_file has a timestamp in the future: $stamp"
	112	rm -f "$stamp_file"
	113	return 0
	114	fi
	115
05f6a46a MZ	116	if [ $delta -ge $interval ]; then
	117	return 0
	118	fi
	119
	120	return 1
	121	}
	122
	123	update_stamp()
	124	{
	125	stamp="$1"
05f6a46a	126	touch $stamp
0c132682 MZ	127	}
0c132682 MZ	128
6cce801a	129	# we check here if autoclean was enough sizewise
2e8a92e5	130	check_size_constraints()
6cce801a	131	{
6cce801a	132	MaxAge=0
6cce801a	133	eval $(apt-config shell MaxAge APT::Archives::MaxAge)
c98870b0 MV	134	eval $(apt-config shell MaxAge APT::Periodic::MaxAge)
	135
	136	MinAge=2
8a139d4d	137	eval $(apt-config shell MinAge APT::Archives::MinAge)
c98870b0 MV	138	eval $(apt-config shell MinAge APT::Periodic::MinAge)
	139
	140	MaxSize=0
6cce801a	141	eval $(apt-config shell MaxSize APT::Archives::MaxSize)
c98870b0 MV	142	eval $(apt-config shell MaxSize APT::Periodic::MaxSize)
	143
	144	CacheDir="var/cache/apt/"
6cce801a	145	eval $(apt-config shell CacheDir Dir::Cache)
c98870b0 MV	146	CacheDir=${CacheDir%/}
	147
	148	CacheArchive="archives/"
6cce801a	149	eval $(apt-config shell CacheArchive Dir::Cache::archives)
c98870b0	150	CacheArchive=${CacheArchive%/}
6cce801a MV	151
	152	# sanity check
	153	if [ -z "$CacheDir" -o -z "$CacheArchive" ]; then
	154	echo "empty Dir::Cache or Dir::Cache::archives, exiting"
	155	exit
	156	fi
01717245 MV	157
01717245 MV	158	Cache="${Dir%/}/${CacheDir%/}/${CacheArchive%/}/"
6cce801a MV	159
6cce801a MV	160	# check age
8a139d4d	161	if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
c98870b0	162	debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge and ctime>$MinAge and mtime>$MinAge"
8e29e348	163	find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 \| xargs -r -0 rm -f
8a139d4d	164	elif [ ! $MaxAge -eq 0 ]; then
c98870b0	165	debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge only"
8e29e348	166	find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 \| xargs -r -0 rm -f
c98870b0 MV	167	else
c98870b0 MV	168	debug_echo "skip aging since MaxAge is 0"
6cce801a MV	169	fi
	170
	171	# check size
	172	if [ ! $MaxSize -eq 0 ]; then
8a139d4d MV	173	# maxSize is in MB
	174	MaxSize=$(($MaxSize*1024))
	175
	176	#get current time
	177	now=$(date --date=$(date --iso-8601) +%s)
	178	MinAge=$(($MinAge2460*60))
	179
6cce801a	180	# reverse-sort by mtime
3408b58c	181	for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
6cce801a MV	182	du=$(du -s $Cache)
	183	size=${du%%/*}
	184	# check if the cache is small enough
	185	if [ $size -lt $MaxSize ]; then
c98870b0	186	debug_echo "end remove by archive size: size=$size < $MaxSize"
6cce801a MV	187	break
6cce801a MV	188	fi
8a139d4d MV	189
8a139d4d MV	190	# check for MinAge of the file
c98870b0	191	if [ $MinAge -ne 0 ]; then
8e29e348	192	# check both ctime and mtime
3971f8e8	193	mtime=$(stat -c %Y $file)
8e29e348 MV	194	ctime=$(stat -c %Z $file)
	195	if [ $mtime -gt $ctime ]; then
	196	delta=$(($now-$mtime))
	197	else
	198	delta=$(($now-$ctime))
	199	fi
8a139d4d	200	if [ $delta -le $MinAge ]; then
c98870b0	201	debug_echo "skip remove by archive size: $file, delta=$delta < $MinAgeSec"
3408b58c	202	break
c98870b0 MV	203	else
	204	# delete oldest file
	205	debug_echo "remove by archive size: $file, delta=$delta >= $MinAgeSec (sec), size=$size >= $MaxSize"
	206	rm -f $file
8a139d4d MV	207	fi
8a139d4d MV	208	fi
6cce801a MV	209	done
	210	fi
	211	}
	212
c98870b0 MV	213	# deal with the Apt::Periodic::BackupArchiveInterval
	214	do_cache_backup()
	215	{
	216	BackupArchiveInterval="$1"
	217	if [ $BackupArchiveInterval -eq 0 ]; then
	218	return
	219	fi
	220
	221	# Set default values and normalize
	222	Dir="/"
	223	eval $(apt-config shell Dir Dir)
	224	Dir=${Dir%/}
	225
	226	CacheDir="var/cache/apt/"
	227	eval $(apt-config shell CacheDir Dir::Cache)
	228	CacheDir=${CacheDir%/}
	229	if [ -z "$CacheDir" ]; then
	230	debug_echo "practically empty Dir::Cache, exiting"
	231	return 0
	232	fi
	233
	234	CacheArchive="archives/"
	235	eval $(apt-config shell CacheArchive Dir::Cache::Archives)
	236	CacheArchive=${CacheArchive%/}
	237	if [ -z "$CacheArchive" ]; then
	238	debug_echo "practically empty Dir::Cache::archives, exiting"
	239	return 0
	240	fi
	241
	242	BackupLevel=3
	243	eval $(apt-config shell BackupLevel APT::Periodic::BackupLevel)
	244	if [ $BackupLevel -le 1 ]; then
	245	BackupLevel=2 ;
	246	fi
	247
	248	CacheBackup="backup/"
	249	eval $(apt-config shell CacheBackup Dir::Cache::Backup)
	250	CacheBackup=${CacheBackup%/}
	251	if [ -z "$CacheBackup" ]; then
	252	echo "practically empty Dir::Cache::Backup, exiting" 1>&2
	253	return
	254	fi
	255
	256	Cache="${Dir}/${CacheDir}/${CacheArchive}/"
	257	Back="${Dir}/${CacheDir}/${CacheBackup}/"
	258	BackX="${Back}${CacheArchive}/"
	259	for x in $(seq 0 1 $((${BackupLevel}-1))); do
	260	eval "Back${x}=${Back}${x}/"
	261	done
	262
	263	# backup after n-days if archive contents changed.
	264	# (This uses hardlink to save disk space)
	265	BACKUP_ARCHIVE_STAMP=/var/lib/apt/periodic/backup-archive-stamp
	266	if check_stamp $BACKUP_ARCHIVE_STAMP $BackupArchiveInterval; then
	267	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
	268	mkdir -p $Back
	269	rm -rf $Back$((${BackupLevel}-1))
	270	for y in $(seq $((${BackupLevel}-1)) -1 1); do
	271	eval BackY=${Back}$y
	272	eval BackZ=${Back}$(($y-1))
	273	if [ -e $BackZ ]; then
	274	mv -f $BackZ $BackY ;
	275	fi
	276	done
277	cp -la $Cache $Back ; mv -f $BackX $Back0
278	update_stamp $BACKUP_ARCHIVE_STAMP
279	debug_echo "backup with hardlinks. (success)"
280	else
281	debug_echo "skip backup since same content."
282	fi
283	else
284	debug_echo "skip backup since too new."
285	fi
286	}
287
d047c6da	288	# sleep for a random interval of time (default 30min)
69c28efc MV	289	# (some code taken from cron-apt, thanks)
	290	random_sleep()
	291	{
	292	RandomSleep=1800
	293	eval $(apt-config shell RandomSleep APT::Periodic::RandomSleep)
	294	if [ $RandomSleep -eq 0 ]; then
	295	return
	296	fi
	297	if [ -z "$RANDOM" ] ; then
	298	# A fix for shells that do not have this bash feature.
	299	RANDOM=$(dd if=/dev/urandom count=1 2> /dev/null \| cksum \| cut -c"1-5")
	300	fi
	301	TIME=$(($RANDOM % $RandomSleep))
c98870b0	302	debug_echo "sleeping for $TIME seconds"
69c28efc MV	303	sleep $TIME
	304	}
	305
69c28efc	306
ff7c76f8	307	debug_echo()
6cce801a	308	{
ff7c76f8 OA	309	# Display message if $VERBOSE >= 1
	310	if [ "$VERBOSE" -ge 1 ]; then
	311	echo $1 1>&2
6cce801a	312	fi
ff7c76f8 OA	313	}
ff7c76f8 OA	314
c98870b0	315	# ------------------------ main ----------------------------
69c28efc	316
ff7c76f8 OA	317	# check apt-config exstance
ff7c76f8 OA	318	if ! which apt-config >/dev/null ; then
18d38975 OS	319	exit 0
18d38975 OS	320	fi
87ddfb96	321
ff7c76f8	322	# Set VERBOSE mode from apt-config (or inherit from environment)
6985efb3	323	VERBOSE=0
ff7c76f8	324	eval $(apt-config shell VERBOSE APT::Periodic::Verbose)
c98870b0	325	debug_echo "verbose level $VERBOSE"
ff7c76f8 OA	326	if [ "$VERBOSE" -le 2 ]; then
	327	# quiet for 0,1,2
	328	XSTDOUT=">/dev/null"
	329	XSTDERR="2>/dev/null"
	330	XAPTOPT="-qq"
	331	XUUPOPT=""
	332	else
	333	XSTDOUT=""
	334	XSTDERR=""
	335	XAPTOPT=""
	336	XUUPOPT="-d"
	337	fi
	338	if [ "$VERBOSE" -ge 3 ]; then
	339	# trace output
	340	set -x
	341	fi
8a139d4d	342
ff7c76f8 OA	343	# laptop check, on_ac_power returns:
	344	# 0 (true) System is on main power
	345	# 1 (false) System is not on main power
	346	# 255 (false) Power status could not be determined
	347	# Desktop systems always return 255 it seems
	348	if which on_ac_power >/dev/null; then
	349	on_ac_power
	350	POWER=$?
	351	if [ $POWER -eq 1 ]; then
c98870b0	352	debug_echo "exit: system NOT on main power"
ff7c76f8 OA	353	exit 0
ff7c76f8 OA	354	elif [ $POWER -ne 0 ]; then
c98870b0	355	debug_echo "power status ($POWER) undetermined, continuing"
6cce801a	356	fi
ff7c76f8 OA	357	debug_echo "system is on main power."
ff7c76f8 OA	358	fi
8a139d4d	359
ff7c76f8	360	# check if we can lock the cache and if the cache is clean
aff278bf	361	if which apt-get >/dev/null && ! eval apt-get check -f $XAPTOPT $XSTDERR ; then
ff7c76f8 OA	362	debug_echo "error encountered in cron job with \"apt-get check\"."
	363	exit 0
	364	fi
8a139d4d	365
ff7c76f8 OA	366	# Global current time in seconds since 1970-01-01 00:00:00 UTC
ff7c76f8 OA	367	now=$(date +%s)
6cce801a	368
ff7c76f8 OA	369	# Support old Archive for compatibility.
ff7c76f8 OA	370	# Document only Periodic for all controling parameters of this script.
ff7c76f8	371
0c132682	372	UpdateInterval=0
ff7c76f8 OA	373	eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists)
ff7c76f8 OA	374
05f6a46a	375	DownloadUpgradeableInterval=0
ff7c76f8	376	eval $(apt-config shell DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
0c132682	377
fdd15654 MV	378	UnattendedUpgradeInterval=0
	379	eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
	380
ff7c76f8 OA	381	AutocleanInterval=0
	382	eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
	383
c98870b0 MV	384	BackupArchiveInterval=0
c98870b0 MV	385	eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)
ff7c76f8	386
4c2dcaa1 MV	387	# check if we actually have to do anything
	388	if [ $UpdateInterval -eq 0 ] &&
	389	[ $DownloadUpgradeableInterval -eq 0 ] &&
	390	[ $UnattendedUpgradeInterval -eq 0 ] &&
2783b261	391	[ $BackupArchiveInterval -eq 0 ] &&
4c2dcaa1 MV	392	[ $AutocleanInterval -eq 0 ]; then
	393	exit 0
	394	fi
fdd15654	395
c98870b0 MV	396	# deal with BackupArchiveInterval
c98870b0 MV	397	do_cache_backup $BackupArchiveInterval
0c132682	398
4c2dcaa1 MV	399	# sleep random amount of time to avoid hitting the
4c2dcaa1 MV	400	# mirrors at the same time
69c28efc MV	401	random_sleep
69c28efc MV	402
ff7c76f8	403	# update package lists
aff278bf	404	UPDATED=0
05f6a46a MZ	405	UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
05f6a46a MZ	406	if check_stamp $UPDATE_STAMP $UpdateInterval; then
ff7c76f8 OA	407	if eval apt-get $XAPTOPT -y update $XSTDERR; then
ff7c76f8 OA	408	debug_echo "download updated metadata (success)."
be993931	409	if which dbus-send >/dev/null && pidof dbus-daemon >/dev/null; then
ff7c76f8 OA	410	if dbus-send --system / app.apt.dbus.updated boolean:true ; then
	411	debug_echo "send dbus signal (success)"
	412	else
	413	debug_echo "send dbus signal (error)"
	414	fi
	415	else
	416	debug_echo "dbus signal not send (command not available)"
05f6a46a	417	fi
ff7c76f8	418	update_stamp $UPDATE_STAMP
aff278bf	419	UPDATED=1
ff7c76f8	420	else
c98870b0	421	debug_echo "download updated metadata (error)"
05f6a46a	422	fi
ff7c76f8 OA	423	else
ff7c76f8 OA	424	debug_echo "download updated metadata (not run)."
fdd15654	425	fi
c98870b0 MV	426
	427	# download all upgradeable packages (if it is requested)
	428	DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
aff278bf	429	if [ $UPDATED -eq 1 ] && check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
c98870b0 MV	430	if eval apt-get $XAPTOPT -y -d dist-upgrade $XSTDERR; then
	431	update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
	432	debug_echo "download upgradable (success)"
	433	else
	434	debug_echo "download upgradable (error)"
	435	fi
	436	else
	437	debug_echo "download upgradable (not run)"
	438	fi
	439
	440	# auto upgrade all upgradeable packages
	441	UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
aff278bf	442	if [ $UPDATED -eq 1 ] && which unattended-upgrade >/dev/null && check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
c98870b0 MV	443	if unattended-upgrade $XUUPOPT; then
	444	update_stamp $UPGRADE_STAMP
	445	debug_echo "unattended-upgrade (success)"
	446	else
	447	debug_echo "unattended-upgrade (error)"
	448	fi
	449	else
	450	debug_echo "unattended-upgrade (not run)"
	451	fi
fdd15654	452
ff7c76f8	453	# autoclean package archive
de15fbae MV	454	AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp
de15fbae MV	455	if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then
c98870b0	456	if eval apt-get $XAPTOPT -y autoclean $XSTDERR; then
ff7c76f8 OA	457	debug_echo "autoclean (success)."
	458	update_stamp $AUTOCLEAN_STAMP
	459	else
c98870b0	460	debug_echo "autoclean (error)"
ff7c76f8 OA	461	fi
ff7c76f8 OA	462	else
c98870b0	463	debug_echo "autoclean (not run)"
de15fbae MV	464	fi
de15fbae MV	465
0fad7309 MV	466	# check cache size
	467	check_size_constraints
	468
ff7c76f8 OA	469	#
	470	# vim: set sts=4 ai :
	471	#
	472