[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=$(date -r $stamp '+%s')
    delta=$(($now-$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)"

    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 on main power."
	exit 0
    elif [ $POWER -ne 0 ]; then
	debug_echo "exit: power status ($POWER) undetermined."
	exit 0
    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 $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 "practically empty Dir::Cache::Backup, exiting" 1>&2
    exit 0
fi

# Support old Archive for compatibility.
# Document only Periodic for all controling parameters of this script.
MaxAge=0
eval $(apt-config shell MaxAge APT::Archives::MaxAge)
eval $(apt-config shell MaxAge APT::Periodic::MaxAge)

MinAge=2
eval $(apt-config shell MinAge APT::Archives::MinAge)
eval $(apt-config shell MinAge APT::Periodic::MinAge)

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

UpdateInterval=0
eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists)

DownloadUpgradeableInterval=0
eval $(apt-config shell 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


# 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)
	49	#
	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
ff7c76f8 OA	72	debug_echo "check_stamp: interval=0."
ff7c76f8 OA	73	# treat as no time has passed
10946ddc MZ	74	return 1
	75	fi
	76
05f6a46a	77	if [ ! -f $stamp ]; then
ff7c76f8 OA	78	update_stamp $stamp
	79	debug_echo "check_stamp: missing time stamp file: $stamp."
	80	# treat as enough time has passed
05f6a46a	81	return 0
0c132682	82	fi
05f6a46a MZ	83
05f6a46a MZ	84	# compare midnight today to midnight the day the stamp was updated
ff7c76f8	85	stamp=$(date -r $stamp '+%s')
05f6a46a	86	delta=$(($now-$stamp))
05f6a46a	87
ff7c76f8	88	# intervall is in days, convert to sec.
8a139d4d	89	interval=$(($interval6060*24))
ff7c76f8	90	debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp, delta=$delta (sec)"
8a139d4d	91
05f6a46a MZ	92	if [ $delta -ge $interval ]; then
	93	return 0
	94	fi
	95
	96	return 1
	97	}
	98
	99	update_stamp()
	100	{
	101	stamp="$1"
05f6a46a	102	touch $stamp
0c132682 MZ	103	}
0c132682 MZ	104
6cce801a	105	# we check here if autoclean was enough sizewise
2e8a92e5	106	check_size_constraints()
6cce801a MV	107	{
	108	# min-age in days
	109	MaxAge=0
89eaeb44	110	MinAge=2
6cce801a MV	111	MaxSize=0
	112	CacheDir="var/cache/apt"
	113	CacheArchive="archives/"
	114	eval $(apt-config shell MaxAge APT::Archives::MaxAge)
8a139d4d	115	eval $(apt-config shell MinAge APT::Archives::MinAge)
6cce801a	116	eval $(apt-config shell MaxSize APT::Archives::MaxSize)
01717245	117	eval $(apt-config shell Dir Dir)
6cce801a MV	118	eval $(apt-config shell CacheDir Dir::Cache)
	119	eval $(apt-config shell CacheArchive Dir::Cache::archives)
	120
	121	# sanity check
	122	if [ -z "$CacheDir" -o -z "$CacheArchive" ]; then
	123	echo "empty Dir::Cache or Dir::Cache::archives, exiting"
	124	exit
	125	fi
01717245 MV	126
01717245 MV	127	Cache="${Dir%/}/${CacheDir%/}/${CacheArchive%/}/"
6cce801a MV	128
6cce801a MV	129	# check age
8a139d4d	130	if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
8e29e348	131	find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 \| xargs -r -0 rm -f
8a139d4d	132	elif [ ! $MaxAge -eq 0 ]; then
8e29e348	133	find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 \| xargs -r -0 rm -f
6cce801a MV	134	fi
	135
	136	# check size
	137	if [ ! $MaxSize -eq 0 ]; then
8a139d4d MV	138	# maxSize is in MB
	139	MaxSize=$(($MaxSize*1024))
	140
	141	#get current time
	142	now=$(date --date=$(date --iso-8601) +%s)
	143	MinAge=$(($MinAge2460*60))
	144
6cce801a	145	# reverse-sort by mtime
3408b58c	146	for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
6cce801a MV	147	du=$(du -s $Cache)
	148	size=${du%%/*}
	149	# check if the cache is small enough
	150	if [ $size -lt $MaxSize ]; then
	151	break
	152	fi
8a139d4d MV	153
	154	# check for MinAge of the file
	155	if [ ! $MinAge -eq 0 ]; then
8e29e348	156	# check both ctime and mtime
3971f8e8	157	mtime=$(stat -c %Y $file)
8e29e348 MV	158	ctime=$(stat -c %Z $file)
	159	if [ $mtime -gt $ctime ]; then
	160	delta=$(($now-$mtime))
	161	else
	162	delta=$(($now-$ctime))
	163	fi
8a139d4d MV	164	#echo "$file ($delta), $MinAge"
	165	if [ $delta -le $MinAge ]; then
	166	#echo "Skiping $file (delta=$delta)"
3408b58c	167	break
8a139d4d MV	168	fi
	169	fi
	170
6cce801a MV	171	# delete oldest file
	172	rm -f $file
	173	done
	174	fi
	175	}
	176
d047c6da	177	# sleep for a random interval of time (default 30min)
69c28efc MV	178	# (some code taken from cron-apt, thanks)
	179	random_sleep()
	180	{
	181	RandomSleep=1800
	182	eval $(apt-config shell RandomSleep APT::Periodic::RandomSleep)
	183	if [ $RandomSleep -eq 0 ]; then
	184	return
	185	fi
	186	if [ -z "$RANDOM" ] ; then
	187	# A fix for shells that do not have this bash feature.
	188	RANDOM=$(dd if=/dev/urandom count=1 2> /dev/null \| cksum \| cut -c"1-5")
	189	fi
	190	TIME=$(($RANDOM % $RandomSleep))
	191	sleep $TIME
	192	}
	193
742f980e	194
ff7c76f8	195	debug_echo()
6cce801a	196	{
ff7c76f8 OA	197	# Display message if $VERBOSE >= 1
	198	if [ "$VERBOSE" -ge 1 ]; then
	199	echo $1 1>&2
6cce801a	200	fi
ff7c76f8 OA	201	}
ff7c76f8 OA	202
69c28efc MV	203	# main
69c28efc MV	204
ff7c76f8 OA	205	# check apt-config exstance
	206	if ! which apt-config >/dev/null ; then
	207	exit 0
	208	fi
6cce801a	209
ff7c76f8 OA	210	# Set VERBOSE mode from apt-config (or inherit from environment)
	211	eval $(apt-config shell VERBOSE APT::Periodic::Verbose)
	212	if [ -z "$VERBOSE" ]; then
	213	VERBOSE="0"
	214	fi
	215	if [ "$VERBOSE" -le 2 ]; then
	216	# quiet for 0,1,2
	217	XSTDOUT=">/dev/null"
	218	XSTDERR="2>/dev/null"
	219	XAPTOPT="-qq"
	220	XUUPOPT=""
	221	else
	222	XSTDOUT=""
	223	XSTDERR=""
	224	XAPTOPT=""
	225	XUUPOPT="-d"
	226	fi
	227	if [ "$VERBOSE" -ge 3 ]; then
	228	# trace output
	229	set -x
	230	fi
8a139d4d	231
ff7c76f8 OA	232	# laptop check, on_ac_power returns:
	233	# 0 (true) System is on main power
	234	# 1 (false) System is not on main power
	235	# 255 (false) Power status could not be determined
	236	# Desktop systems always return 255 it seems
	237	if which on_ac_power >/dev/null; then
	238	on_ac_power
	239	POWER=$?
	240	if [ $POWER -eq 1 ]; then
	241	debug_echo "exit: system on main power."
	242	exit 0
	243	elif [ $POWER -ne 0 ]; then
	244	debug_echo "exit: power status ($POWER) undetermined."
	245	exit 0
6cce801a	246	fi
ff7c76f8 OA	247	debug_echo "system is on main power."
ff7c76f8 OA	248	fi
8a139d4d	249
ff7c76f8 OA	250	# check if we can lock the cache and if the cache is clean
	251	if which apt-get >/dev/null && ! eval apt-get check $XAPTOPT $XSTDERR ; then
	252	debug_echo "error encountered in cron job with \"apt-get check\"."
	253	exit 0
	254	fi
	255	# No need to check for apt-get below
8a139d4d	256
ff7c76f8 OA	257	# Global current time in seconds since 1970-01-01 00:00:00 UTC
ff7c76f8 OA	258	now=$(date +%s)
6cce801a	259
ff7c76f8 OA	260	# Set default values and normalize
	261	Dir="/"
	262	eval $(apt-config shell Dir Dir)
	263	Dir=${Dir%/}
	264
	265	CacheDir="var/cache/apt/"
	266	eval $(apt-config shell CacheDir Dir::Cache)
	267	CacheDir=${CacheDir%/}
	268	if [ -z "$CacheDir" ]; then
	269	debug_echo "practically empty Dir::Cache, exiting"
	270	exit 0
	271	fi
69c28efc	272
ff7c76f8 OA	273	CacheArchive="archives/"
	274	eval $(apt-config shell CacheArchive Dir::Cache::Archives)
	275	CacheArchive=${CacheArchive%/}
	276	if [ -z "$CacheArchive" ]; then
	277	debug_echo "practically empty Dir::Cache::archives, exiting"
	278	exit 0
	279	fi
69c28efc	280
ff7c76f8 OA	281	BackupArchiveInterval=0
	282	eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)
	283
c7560b77 MV	284	BackupLevel=3
	285	eval $(apt-config shell BackupLevel APT::Periodic::BackupLevel)
	286	if [ $BackupLevel -le 1 ]; then BackupLevel=2 ; fi
ff7c76f8 OA	287
	288	CacheBackup="backup/"
	289	eval $(apt-config shell CacheBackup Dir::Cache::Backup)
	290	CacheBackup=${CacheBackup%/}
	291	if [ -z "$CacheBackup" ]; then
	292	echo "practically empty Dir::Cache::Backup, exiting" 1>&2
	293	exit 0
18d38975	294	fi
87ddfb96	295
ff7c76f8 OA	296	# Support old Archive for compatibility.
	297	# Document only Periodic for all controling parameters of this script.
	298	MaxAge=0
	299	eval $(apt-config shell MaxAge APT::Archives::MaxAge)
	300	eval $(apt-config shell MaxAge APT::Periodic::MaxAge)
	301
	302	MinAge=2
	303	eval $(apt-config shell MinAge APT::Archives::MinAge)
	304	eval $(apt-config shell MinAge APT::Periodic::MinAge)
	305
	306	MaxSize=0
	307	eval $(apt-config shell MaxSize APT::Archives::MaxSize)
	308	eval $(apt-config shell MaxSize APT::Periodic::MaxSize)
	309
0c132682	310	UpdateInterval=0
ff7c76f8 OA	311	eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists)
ff7c76f8 OA	312
05f6a46a	313	DownloadUpgradeableInterval=0
ff7c76f8	314	eval $(apt-config shell DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
0c132682	315
fdd15654 MV	316	UnattendedUpgradeInterval=0
	317	eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
	318
ff7c76f8 OA	319	AutocleanInterval=0
	320	eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
	321
	322	Cache="${Dir}/${CacheDir}/${CacheArchive}/"
	323	Back="${Dir}/${CacheDir}/${CacheBackup}/"
	324	BackX="${Back}${CacheArchive}/"
	325	for x in $(seq 0 1 $((${BackupLevel}-1))); do
	326	eval "Back${x}=${Back}${x}/"
	327	done
	328
4c2dcaa1 MV	329	# check if we actually have to do anything
	330	if [ $UpdateInterval -eq 0 ] &&
	331	[ $DownloadUpgradeableInterval -eq 0 ] &&
	332	[ $UnattendedUpgradeInterval -eq 0 ] &&
2783b261	333	[ $BackupArchiveInterval -eq 0 ] &&
4c2dcaa1 MV	334	[ $AutocleanInterval -eq 0 ]; then
	335	exit 0
	336	fi
fdd15654	337
0c132682	338
ff7c76f8 OA	339	# backup after n-days if archive contents changed.
	340	# (This uses hardlink to save disk space)
	341	BACKUP_ARCHIVE_STAMP=/var/lib/apt/periodic/backup-archive-stamp
	342	if check_stamp $BACKUP_ARCHIVE_STAMP $BackupArchiveInterval; then
	343	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
	344	mkdir -p $Back
	345	rm -rf $Back$((${BackupLevel}-1))
	346	for y in $(seq $((${BackupLevel}-1)) -1 1); do
	347	eval BackY=${Back}$y
	348	eval BackZ=${Back}$(($y-1))
	349	if [ -e $BackZ ]; then mv -f $BackZ $BackY ; fi
	350	done
	351	cp -la $Cache $Back ; mv -f $BackX $Back0
	352	update_stamp $BACKUP_ARCHIVE_STAMP
	353	debug_echo "backup with hardlinks. (success)"
	354	else
fdd15654	355
ff7c76f8	356	debug_echo "skip backup since same content."
0c132682	357	fi
ff7c76f8 OA	358	else
ff7c76f8 OA	359	debug_echo "skip backup since too new."
0c132682 MZ	360	fi
0c132682 MZ	361
ff7c76f8 OA	362	# package archive contnts removal by package age
	363	if [ $MaxAge -ne 0 ] && [ $MinAge -ne 0 ]; then
	364	find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 \| xargs -r -0 rm -f
	365	debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge and ctime>$MinAge and mtime>$MinAge"
	366	elif [ $MaxAge -ne 0 ]; then
	367	find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 \| xargs -r -0 rm -f
	368	debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge only"
	369	else
	370	debug_echo "skip aging since MaxAge is 0"
e15dcd38	371	fi
ff7c76f8 OA	372
	373	# package archive contnts removal down to $MaxSize
	374	if [ $MaxSize -ne 0 ]; then
	375
	376	MinAgeSec=$(($MinAge2460*60))
	377
	378	# reverse-sort by mtime
	379	for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
	380	du=$(du -m -s $Cache)
	381	size=${du%%/*}
	382	# check if the cache is small enough
	383	if [ $size -lt $MaxSize ]; then
	384	debug_echo "end remove by archive size: size=$size < $MaxSize"
	385	break
	386	fi
e15dcd38	387
ff7c76f8 OA	388	# check for MinAge in second of the file
	389	if [ $MinAgeSec -ne 0 ]; then
	390	# check both ctime and mtime
	391	mtime=$(stat -c %Y $file)
	392	ctime=$(stat -c %Z $file)
	393	if [ $mtime -gt $ctime ]; then
	394	delta=$(($now-$mtime))
	395	else
	396	delta=$(($now-$ctime))
	397	fi
	398	if [ $delta -le $MinAgeSec ]; then
	399	debug_echo "skip remove by archive size: $file, delta=$delta < $MinAgeSec"
	400	else
	401	# delete oldest file
	402	debug_echo "remove by archive size: $file, delta=$delta >= $MinAgeSec (sec), size=$size >= $MaxSize"
	403	rm -f $file
	404	fi
	405	fi
69c28efc	406
ff7c76f8	407	done
69c28efc	408	fi
e15dcd38	409
ff7c76f8	410	# update package lists
05f6a46a MZ	411	UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
05f6a46a MZ	412	if check_stamp $UPDATE_STAMP $UpdateInterval; then
ff7c76f8 OA	413	if eval apt-get $XAPTOPT -y update $XSTDERR; then
ff7c76f8 OA	414	debug_echo "download updated metadata (success)."
be993931	415	if which dbus-send >/dev/null && pidof dbus-daemon >/dev/null; then
ff7c76f8 OA	416	if dbus-send --system / app.apt.dbus.updated boolean:true ; then
	417	debug_echo "send dbus signal (success)"
	418	else
	419	debug_echo "send dbus signal (error)"
	420	fi
	421	else
	422	debug_echo "dbus signal not send (command not available)"
05f6a46a	423	fi
ff7c76f8 OA	424	update_stamp $UPDATE_STAMP
	425	# download all upgradeable packages if it is requested
	426	DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
	427	if check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
	428	if eval apt-get $XAPTOPT -y -d dist-upgrade $XSTDERR; then
	429	update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
	430	debug_echo "download upgradable (success)."
	431	# auto upgrade all upgradeable packages
	432	UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
	433	if which unattended-upgrade >/dev/null && check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
	434	if unattended-upgrade $XUUPOPT; then
	435	update_stamp $UPGRADE_STAMP
	436	debug_echo "unattended-upgrade (success)."
	437	else
	438	debug_echo "unattended-upgrade (error)."
	439	fi
	440	else
	441	debug_echo "unattended-upgrade (not run)."
	442	fi
	443	else
	444	debug_echo "download upgradable (error)."
	445	fi
	446	else
	447	debug_echo "download upgradable (not run)."
	448	fi
	449	else
	450	debug_echo "download updated metadata (error)."
05f6a46a	451	fi
ff7c76f8 OA	452	else
ff7c76f8 OA	453	debug_echo "download updated metadata (not run)."
0c132682 MZ	454	fi
0c132682 MZ	455
ff7c76f8	456	# autoclean package archive
de15fbae MV	457	AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp
de15fbae MV	458	if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then
ff7c76f8 OA	459	if apt-get $XAPTOPT -y autoclean $XSTDERR; then
	460	debug_echo "autoclean (success)."
	461	update_stamp $AUTOCLEAN_STAMP
	462	else
	463	debug_echo "autoclean (error)."
	464	fi
	465	else
	466	debug_echo "autoclean (not run)."
de15fbae MV	467	fi
de15fbae MV	468
ff7c76f8 OA	469	#
	470	# vim: set sts=4 ai :
	471	#
	472