[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
    	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_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()
{
    # 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
    fi
    
    Cache="${Dir%/}/${CacheDir%/}/${CacheArchive%/}/"

    # 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
    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

	    # 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

	    # delete oldest file
	    rm -f $file
	done
    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))
    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)
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 NOT on main power."
	exit 0
    elif [ $POWER -ne 0 ]; then
	debug_echo "power status ($POWER) undetermined."
    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 && ! 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

# Global current time in seconds since 1970-01-01 00:00:00 UTC
now=$(date +%s)

# 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

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

BackupArchiveInterval=0
eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)

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 "empty Dir::Cache::Backup, using default" 1>&2
    CacheBackup="backup/"
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 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

# 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

# sleep random amount of time to avoid hitting the 
# mirrors at the same time
random_sleep

# 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

# 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

	# 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

    done
fi

# update package lists
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
	# 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

# autoclean package archive
AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp
if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then
    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

#
#     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	78	update_stamp $stamp
53391d0f	79	debug_echo "check_stamp: missing time stamp file: $stamp"
ff7c76f8	80	# treat as enough time has passed
05f6a46a	81	return 0
0c132682	82	fi
05f6a46a MZ	83
05f6a46a MZ	84	# compare midnight today to midnight the day the stamp was updated
a7c526b6 MV	85	stamp_file="$stamp"
	86	stamp=$(date --date=$(date -r $stamp_file --iso-8601) +%s 2>/dev/null)
	87	if [ "$?" != "0" ]; then
	88	# Due to some timezones returning 'invalid date' for midnight on
	89	# certain dates (eg America/Sao_Paulo), if date returns with error
	90	# remove the stamp file and return 0. See coreutils bug:
	91	# http://lists.gnu.org/archive/html/bug-coreutils/2007-09/msg00176.html
	92	rm -f "$stamp_file"
	93	return 0
	94	fi
	95
	96	now=$(date --date=$(date --iso-8601) +%s 2>/dev/null)
	97	if [ "$?" != "0" ]; then
	98	# As above, due to some timezones returning 'invalid date' for midnight
	99	# on certain dates (eg America/Sao_Paulo), if date returns with error
	100	# return 0.
	101	return 0
	102	fi
	103
05f6a46a	104	delta=$(($now-$stamp))
05f6a46a	105
ff7c76f8	106	# intervall is in days, convert to sec.
8a139d4d	107	interval=$(($interval6060*24))
ff7c76f8	108	debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp, delta=$delta (sec)"
8a139d4d	109
6e7c6c3f MV	110	# remove timestamps a day (or more) in the future and force re-check
	111	if [ $stamp -gt $(($now+86400)) ]; then
	112	echo "WARNING: file $stamp_file has a timestamp in the future: $stamp"
	113	rm -f "$stamp_file"
	114	return 0
	115	fi
	116
05f6a46a MZ	117	if [ $delta -ge $interval ]; then
	118	return 0
	119	fi
	120
	121	return 1
	122	}
	123
	124	update_stamp()
	125	{
	126	stamp="$1"
05f6a46a	127	touch $stamp
0c132682 MZ	128	}
0c132682 MZ	129
6cce801a	130	# we check here if autoclean was enough sizewise
2e8a92e5	131	check_size_constraints()
6cce801a MV	132	{
	133	# min-age in days
	134	MaxAge=0
89eaeb44	135	MinAge=2
6cce801a MV	136	MaxSize=0
	137	CacheDir="var/cache/apt"
	138	CacheArchive="archives/"
	139	eval $(apt-config shell MaxAge APT::Archives::MaxAge)
8a139d4d	140	eval $(apt-config shell MinAge APT::Archives::MinAge)
6cce801a	141	eval $(apt-config shell MaxSize APT::Archives::MaxSize)
01717245	142	eval $(apt-config shell Dir Dir)
6cce801a MV	143	eval $(apt-config shell CacheDir Dir::Cache)
	144	eval $(apt-config shell CacheArchive Dir::Cache::archives)
	145
	146	# sanity check
	147	if [ -z "$CacheDir" -o -z "$CacheArchive" ]; then
	148	echo "empty Dir::Cache or Dir::Cache::archives, exiting"
	149	exit
	150	fi
01717245 MV	151
01717245 MV	152	Cache="${Dir%/}/${CacheDir%/}/${CacheArchive%/}/"
6cce801a MV	153
6cce801a MV	154	# check age
8a139d4d	155	if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
8e29e348	156	find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 \| xargs -r -0 rm -f
8a139d4d	157	elif [ ! $MaxAge -eq 0 ]; then
8e29e348	158	find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 \| xargs -r -0 rm -f
6cce801a MV	159	fi
	160
	161	# check size
	162	if [ ! $MaxSize -eq 0 ]; then
8a139d4d MV	163	# maxSize is in MB
	164	MaxSize=$(($MaxSize*1024))
	165
	166	#get current time
	167	now=$(date --date=$(date --iso-8601) +%s)
	168	MinAge=$(($MinAge2460*60))
	169
6cce801a	170	# reverse-sort by mtime
3408b58c	171	for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
6cce801a MV	172	du=$(du -s $Cache)
	173	size=${du%%/*}
	174	# check if the cache is small enough
	175	if [ $size -lt $MaxSize ]; then
	176	break
	177	fi
8a139d4d MV	178
	179	# check for MinAge of the file
	180	if [ ! $MinAge -eq 0 ]; then
8e29e348	181	# check both ctime and mtime
3971f8e8	182	mtime=$(stat -c %Y $file)
8e29e348 MV	183	ctime=$(stat -c %Z $file)
	184	if [ $mtime -gt $ctime ]; then
	185	delta=$(($now-$mtime))
	186	else
	187	delta=$(($now-$ctime))
	188	fi
8a139d4d MV	189	#echo "$file ($delta), $MinAge"
	190	if [ $delta -le $MinAge ]; then
	191	#echo "Skiping $file (delta=$delta)"
3408b58c	192	break
8a139d4d MV	193	fi
	194	fi
	195
6cce801a MV	196	# delete oldest file
	197	rm -f $file
	198	done
	199	fi
	200	}
	201
d047c6da	202	# sleep for a random interval of time (default 30min)
69c28efc MV	203	# (some code taken from cron-apt, thanks)
	204	random_sleep()
	205	{
	206	RandomSleep=1800
	207	eval $(apt-config shell RandomSleep APT::Periodic::RandomSleep)
	208	if [ $RandomSleep -eq 0 ]; then
	209	return
	210	fi
	211	if [ -z "$RANDOM" ] ; then
	212	# A fix for shells that do not have this bash feature.
	213	RANDOM=$(dd if=/dev/urandom count=1 2> /dev/null \| cksum \| cut -c"1-5")
	214	fi
	215	TIME=$(($RANDOM % $RandomSleep))
	216	sleep $TIME
	217	}
	218
69c28efc	219
ff7c76f8	220	debug_echo()
6cce801a	221	{
ff7c76f8 OA	222	# Display message if $VERBOSE >= 1
	223	if [ "$VERBOSE" -ge 1 ]; then
	224	echo $1 1>&2
6cce801a	225	fi
ff7c76f8 OA	226	}
ff7c76f8 OA	227
53391d0f MV	228
53391d0f MV	229	# ----------------- main ----------------
69c28efc	230
ff7c76f8 OA	231	# check apt-config exstance
ff7c76f8 OA	232	if ! which apt-config >/dev/null ; then
18d38975 OS	233	exit 0
18d38975 OS	234	fi
87ddfb96	235
ff7c76f8 OA	236	# Set VERBOSE mode from apt-config (or inherit from environment)
	237	eval $(apt-config shell VERBOSE APT::Periodic::Verbose)
	238	if [ -z "$VERBOSE" ]; then
	239	VERBOSE="0"
	240	fi
	241	if [ "$VERBOSE" -le 2 ]; then
	242	# quiet for 0,1,2
	243	XSTDOUT=">/dev/null"
	244	XSTDERR="2>/dev/null"
	245	XAPTOPT="-qq"
	246	XUUPOPT=""
	247	else
	248	XSTDOUT=""
	249	XSTDERR=""
	250	XAPTOPT=""
	251	XUUPOPT="-d"
	252	fi
	253	if [ "$VERBOSE" -ge 3 ]; then
	254	# trace output
	255	set -x
	256	fi
8a139d4d	257
ff7c76f8 OA	258	# laptop check, on_ac_power returns:
	259	# 0 (true) System is on main power
	260	# 1 (false) System is not on main power
	261	# 255 (false) Power status could not be determined
	262	# Desktop systems always return 255 it seems
	263	if which on_ac_power >/dev/null; then
	264	on_ac_power
	265	POWER=$?
	266	if [ $POWER -eq 1 ]; then
53391d0f	267	debug_echo "exit: system NOT on main power."
ff7c76f8 OA	268	exit 0
ff7c76f8 OA	269	elif [ $POWER -ne 0 ]; then
53391d0f	270	debug_echo "power status ($POWER) undetermined."
6cce801a	271	fi
ff7c76f8 OA	272	debug_echo "system is on main power."
ff7c76f8 OA	273	fi
8a139d4d	274
ff7c76f8	275	# check if we can lock the cache and if the cache is clean
53391d0f	276	if which apt-get >/dev/null && ! apt-get check $XAPTOPT $XSTDERR ; then
ff7c76f8 OA	277	debug_echo "error encountered in cron job with \"apt-get check\"."
	278	exit 0
	279	fi
	280	# No need to check for apt-get below
8a139d4d	281
ff7c76f8 OA	282	# Global current time in seconds since 1970-01-01 00:00:00 UTC
ff7c76f8 OA	283	now=$(date +%s)
6cce801a	284
ff7c76f8 OA	285	# Set default values and normalize
	286	Dir="/"
	287	eval $(apt-config shell Dir Dir)
	288	Dir=${Dir%/}
	289
	290	CacheDir="var/cache/apt/"
	291	eval $(apt-config shell CacheDir Dir::Cache)
	292	CacheDir=${CacheDir%/}
	293	if [ -z "$CacheDir" ]; then
	294	debug_echo "practically empty Dir::Cache, exiting"
	295	exit 0
	296	fi
69c28efc	297
ff7c76f8 OA	298	CacheArchive="archives/"
	299	eval $(apt-config shell CacheArchive Dir::Cache::Archives)
	300	CacheArchive=${CacheArchive%/}
	301	if [ -z "$CacheArchive" ]; then
	302	debug_echo "practically empty Dir::Cache::archives, exiting"
	303	exit 0
	304	fi
69c28efc	305
ff7c76f8 OA	306	BackupArchiveInterval=0
	307	eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)
	308
c7560b77 MV	309	BackupLevel=3
c7560b77 MV	310	eval $(apt-config shell BackupLevel APT::Periodic::BackupLevel)
53391d0f MV	311	if [ $BackupLevel -le 1 ]; then
	312	BackupLevel=2 ;
	313	fi
ff7c76f8 OA	314
	315	CacheBackup="backup/"
	316	eval $(apt-config shell CacheBackup Dir::Cache::Backup)
	317	CacheBackup=${CacheBackup%/}
	318	if [ -z "$CacheBackup" ]; then
53391d0f MV	319	echo "empty Dir::Cache::Backup, using default" 1>&2
53391d0f MV	320	CacheBackup="backup/"
18d38975	321	fi
87ddfb96	322
ff7c76f8 OA	323	# Support old Archive for compatibility.
	324	# Document only Periodic for all controling parameters of this script.
	325	MaxAge=0
	326	eval $(apt-config shell MaxAge APT::Archives::MaxAge)
	327	eval $(apt-config shell MaxAge APT::Periodic::MaxAge)
	328
	329	MinAge=2
	330	eval $(apt-config shell MinAge APT::Archives::MinAge)
	331	eval $(apt-config shell MinAge APT::Periodic::MinAge)
	332
	333	MaxSize=0
	334	eval $(apt-config shell MaxSize APT::Archives::MaxSize)
	335	eval $(apt-config shell MaxSize APT::Periodic::MaxSize)
	336
0c132682	337	UpdateInterval=0
ff7c76f8 OA	338	eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists)
ff7c76f8 OA	339
05f6a46a	340	DownloadUpgradeableInterval=0
ff7c76f8	341	eval $(apt-config shell DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
0c132682	342
fdd15654 MV	343	UnattendedUpgradeInterval=0
	344	eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
	345
ff7c76f8 OA	346	AutocleanInterval=0
	347	eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
	348
	349	Cache="${Dir}/${CacheDir}/${CacheArchive}/"
	350	Back="${Dir}/${CacheDir}/${CacheBackup}/"
	351	BackX="${Back}${CacheArchive}/"
	352	for x in $(seq 0 1 $((${BackupLevel}-1))); do
	353	eval "Back${x}=${Back}${x}/"
	354	done
	355
4c2dcaa1 MV	356	# check if we actually have to do anything
	357	if [ $UpdateInterval -eq 0 ] &&
	358	[ $DownloadUpgradeableInterval -eq 0 ] &&
	359	[ $UnattendedUpgradeInterval -eq 0 ] &&
2783b261	360	[ $BackupArchiveInterval -eq 0 ] &&
4c2dcaa1 MV	361	[ $AutocleanInterval -eq 0 ]; then
	362	exit 0
	363	fi
fdd15654	364
4c2dcaa1 MV	365	# sleep random amount of time to avoid hitting the
4c2dcaa1 MV	366	# mirrors at the same time
69c28efc MV	367	random_sleep
69c28efc MV	368
ff7c76f8 OA	369	# backup after n-days if archive contents changed.
	370	# (This uses hardlink to save disk space)
	371	BACKUP_ARCHIVE_STAMP=/var/lib/apt/periodic/backup-archive-stamp
	372	if check_stamp $BACKUP_ARCHIVE_STAMP $BackupArchiveInterval; then
	373	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
	374	mkdir -p $Back
	375	rm -rf $Back$((${BackupLevel}-1))
	376	for y in $(seq $((${BackupLevel}-1)) -1 1); do
	377	eval BackY=${Back}$y
	378	eval BackZ=${Back}$(($y-1))
	379	if [ -e $BackZ ]; then mv -f $BackZ $BackY ; fi
	380	done
	381	cp -la $Cache $Back ; mv -f $BackX $Back0
	382	update_stamp $BACKUP_ARCHIVE_STAMP
	383	debug_echo "backup with hardlinks. (success)"
	384	else
fdd15654	385
ff7c76f8	386	debug_echo "skip backup since same content."
4c2dcaa1	387	fi
ff7c76f8 OA	388	else
ff7c76f8 OA	389	debug_echo "skip backup since too new."
69c28efc	390	fi
e15dcd38	391
ff7c76f8 OA	392	# package archive contnts removal by package age
	393	if [ $MaxAge -ne 0 ] && [ $MinAge -ne 0 ]; then
	394	find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 \| xargs -r -0 rm -f
	395	debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge and ctime>$MinAge and mtime>$MinAge"
	396	elif [ $MaxAge -ne 0 ]; then
	397	find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 \| xargs -r -0 rm -f
	398	debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge only"
	399	else
	400	debug_echo "skip aging since MaxAge is 0"
0c132682	401	fi
ff7c76f8 OA	402
	403	# package archive contnts removal down to $MaxSize
	404	if [ $MaxSize -ne 0 ]; then
	405
	406	MinAgeSec=$(($MinAge2460*60))
	407
	408	# reverse-sort by mtime
	409	for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
	410	du=$(du -m -s $Cache)
	411	size=${du%%/*}
	412	# check if the cache is small enough
	413	if [ $size -lt $MaxSize ]; then
	414	debug_echo "end remove by archive size: size=$size < $MaxSize"
	415	break
	416	fi
e15dcd38	417
ff7c76f8 OA	418	# check for MinAge in second of the file
	419	if [ $MinAgeSec -ne 0 ]; then
	420	# check both ctime and mtime
	421	mtime=$(stat -c %Y $file)
	422	ctime=$(stat -c %Z $file)
	423	if [ $mtime -gt $ctime ]; then
	424	delta=$(($now-$mtime))
	425	else
	426	delta=$(($now-$ctime))
	427	fi
	428	if [ $delta -le $MinAgeSec ]; then
	429	debug_echo "skip remove by archive size: $file, delta=$delta < $MinAgeSec"
	430	else
	431	# delete oldest file
	432	debug_echo "remove by archive size: $file, delta=$delta >= $MinAgeSec (sec), size=$size >= $MaxSize"
	433	rm -f $file
	434	fi
	435	fi
0c132682	436
ff7c76f8	437	done
0c132682	438	fi
9bd1cf87	439
ff7c76f8	440	# update package lists
05f6a46a MZ	441	UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
05f6a46a MZ	442	if check_stamp $UPDATE_STAMP $UpdateInterval; then
ff7c76f8 OA	443	if eval apt-get $XAPTOPT -y update $XSTDERR; then
ff7c76f8 OA	444	debug_echo "download updated metadata (success)."
be993931	445	if which dbus-send >/dev/null && pidof dbus-daemon >/dev/null; then
ff7c76f8 OA	446	if dbus-send --system / app.apt.dbus.updated boolean:true ; then
	447	debug_echo "send dbus signal (success)"
	448	else
	449	debug_echo "send dbus signal (error)"
	450	fi
	451	else
	452	debug_echo "dbus signal not send (command not available)"
05f6a46a	453	fi
ff7c76f8 OA	454	update_stamp $UPDATE_STAMP
	455	# download all upgradeable packages if it is requested
	456	DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
	457	if check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
	458	if eval apt-get $XAPTOPT -y -d dist-upgrade $XSTDERR; then
	459	update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
	460	debug_echo "download upgradable (success)."
	461	# auto upgrade all upgradeable packages
	462	UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
	463	if which unattended-upgrade >/dev/null && check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
	464	if unattended-upgrade $XUUPOPT; then
	465	update_stamp $UPGRADE_STAMP
	466	debug_echo "unattended-upgrade (success)."
	467	else
	468	debug_echo "unattended-upgrade (error)."
	469	fi
	470	else
	471	debug_echo "unattended-upgrade (not run)."
	472	fi
	473	else
	474	debug_echo "download upgradable (error)."
	475	fi
	476	else
	477	debug_echo "download upgradable (not run)."
	478	fi
	479	else
	480	debug_echo "download updated metadata (error)."
05f6a46a	481	fi
ff7c76f8 OA	482	else
ff7c76f8 OA	483	debug_echo "download updated metadata (not run)."
fdd15654 MV	484	fi
fdd15654 MV	485
ff7c76f8	486	# autoclean package archive
de15fbae MV	487	AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp
de15fbae MV	488	if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then
ff7c76f8 OA	489	if apt-get $XAPTOPT -y autoclean $XSTDERR; then
	490	debug_echo "autoclean (success)."
	491	update_stamp $AUTOCLEAN_STAMP
	492	else
	493	debug_echo "autoclean (error)."
	494	fi
	495	else
	496	debug_echo "autoclean (not run)."
de15fbae MV	497	fi
de15fbae MV	498
ff7c76f8 OA	499	#
	500	# vim: set sts=4 ai :
	501	#
	502