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

#!/bin/sh
#set -e
#
# This file understands the following apt configuration variables:
# Values here are the default.
# Create /etc/apt/apt.conf.d/10periodic file to set your preference.
#
#  Dir "/";
#  - RootDir for all configuration files
#
#  Dir::Cache "var/cache/apt/";
#  - Set apt package cache directory
#
#  Dir::Cache::Archives "archives/";
#  - Set package archive directory
#
#  APT::Periodic::Enable "1";
#  - Enable the update/upgrade script (0=disable)
#
#  APT::Periodic::BackupArchiveInterval "0";
#  - Backup after n-days if archive contents changed.(0=disable)
#
#  APT::Periodic::BackupLevel "3";
#  - Backup level.(0=disable), 1 is invalid.
#
#  Dir::Cache::Backup "backup/";
#  - Set periodic package backup directory
#
#  APT::Archives::MaxAge "0"; (old, deprecated)
#  APT::Periodic::MaxAge "0"; (new)
#  - Set maximum allowed age of a cache package file. If a cache 
#    package file is older it is deleted (0=disable)
#
#  APT::Archives::MinAge "2"; (old, deprecated)
#  APT::Periodic::MinAge "2"; (new)
#  - Set minimum age of a package file. If a file is younger it
#    will not be deleted (0=disable). Useful 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 oldest packages will be deleted 
#    first).
#
#  APT::Periodic::Update-Package-Lists "0";
#  - Do "apt-get update" automatically every n-days (0=disable)
#    
#  APT::Periodic::Download-Upgradeable-Packages "0";
#  - Do "apt-get upgrade --download-only" every n-days (0=disable)
#
#  APT::Periodic::Download-Upgradeable-Packages-Debdelta "1";
#  - Use debdelta-upgrade to download updates if available (0=disable)
#
#  APT::Periodic::Unattended-Upgrade "0";
#  - Run the "unattended-upgrade" security upgrade script 
#    every n-days (0=disabled)
#    Requires the package "unattended-upgrades" and will write
#    a log in /var/log/unattended-upgrades
# 
#  APT::Periodic::AutocleanInterval "0";
#  - Do "apt-get autoclean" every n-days (0=disable)
#
#  APT::Periodic::CleanInterval "0";
#  - Do "apt-get clean" 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 (e.g. 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 (e.g. America/Sao_Paulo), if date returns with error
        # return 0.
        return 0
    fi

    delta=$(($now-$stamp))

    # interval 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)

    Cache="/var/cache/apt/archives/"
    eval $(apt-config shell Cache Dir::Cache::archives/d)

    # sanity check
    if [ -z "$Cache" ]; then
	echo "empty Dir::Cache::archives, exiting"
	exit
    fi

    # 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 < $MinAge"
		    break
		else
		    # delete oldest file
		    debug_echo "remove by archive size: $file, delta=$delta >= $MinAge (sec), size=$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
    CacheDir="/var/cache/apt"
    eval $(apt-config shell CacheDir Dir::Cache/d)
    CacheDir=${CacheDir%/}
    if [ -z "$CacheDir" ]; then
	debug_echo "practically empty Dir::Cache, exiting"
	return 0
    fi

    Cache="${CacheDir}/archives/"
    eval $(apt-config shell Cache Dir::Cache::Archives/d)
    if [ -z "$Cache" ]; 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
    
    Back="${CacheDir}/backup/"
    eval $(apt-config shell Back Dir::Cache::Backup/d)
    if [ -z "$Back" ]; then
	echo "practically empty Dir::Cache::Backup, exiting" 1>&2
	return
    fi

    CacheArchive="$(basename "${Cache}")"
    test -n "${CacheArchive}" || CacheArchive="archives"
    BackX="${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
}

debug_echo()
{
    # Display message if $VERBOSE >= 1
    if [ "$VERBOSE" -ge 1 ]; then
	echo $1 1>&2
    fi
}

# ------------------------ main ----------------------------

if test -r /var/lib/apt/extended_states; then
    # Backup the 7 last versions of APT's extended_states file
    # shameless copy from dpkg cron
    if cd /var/backups ; then
	if ! cmp -s apt.extended_states.0 /var/lib/apt/extended_states; then
	    cp -p /var/lib/apt/extended_states apt.extended_states
	    savelog -c 7 apt.extended_states >/dev/null
	fi
    fi
fi

# check apt-config existence
if ! which apt-config >/dev/null 2>&1; then
	exit 0
fi

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

if [ $AutoAptEnable -eq 0 ]; then
    exit 0
fi

# Set VERBOSE mode from  apt-config (or inherit from environment)
VERBOSE=0
eval $(apt-config shell VERBOSE APT::Periodic::Verbose)
debug_echo "verbose level $VERBOSE"
if [ "$VERBOSE" -le 2 ]; then
    # quiet for 0,1,2
    XSTDOUT=">/dev/null"
    XSTDERR="2>/dev/null"
    XAPTOPT="-qq"
    XUUPOPT=""
else
    XSTDOUT=""
    XSTDERR=""
    XAPTOPT=""
    XUUPOPT="-d"
fi
if [ "$VERBOSE" -ge 3 ]; then
    # trace output
    set -x
fi

# check if we can lock the cache and if the cache is clean
if which apt-get >/dev/null 2>&1 && ! eval apt-get check $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 controlling 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)

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

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

Debdelta=1
eval $(apt-config shell Debdelta APT::Periodic::Download-Upgradeable-Packages-Debdelta)

# check if we actually have to do anything that requires locking the cache
if [ $UpdateInterval -eq 0 ] &&
   [ $DownloadUpgradeableInterval -eq 0 ] &&
   [ $UnattendedUpgradeInterval -eq 0 ] &&
   [ $BackupArchiveInterval -eq 0 ] &&
   [ $AutocleanInterval -eq 0 ] &&
   [ $CleanInterval -eq 0 ]; then

    # check cache size
    check_size_constraints

    exit 0
fi

# deal with BackupArchiveInterval
do_cache_backup $BackupArchiveInterval

# include default system language so that "apt-get update" will
# fetch the right translated package descriptions
if [ -r /etc/default/locale ]; then
    . /etc/default/locale
    export LANG LANGUAGE LC_MESSAGES LC_ALL
fi

# 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 2>&1 && pidof dbus-daemon >/dev/null 2>&1; 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 [ $Debdelta -eq 1 ]; then
        debdelta-upgrade >/dev/null 2>&1 || true
    fi
    if  eval apt-get $XAPTOPT -y -d dist-upgrade $XSTDERR; then
	update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
	debug_echo "download upgradable (success)"
    else
	debug_echo "download upgradable (error)"
    fi
else
    debug_echo "download upgradable (not run)"
fi

# auto upgrade all upgradeable packages
UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
if which unattended-upgrade >/dev/null 2>&1 && 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

# clean package archive
CLEAN_STAMP=/var/lib/apt/periodic/clean-stamp
if check_stamp $CLEAN_STAMP $CleanInterval; then
    if  eval apt-get $XAPTOPT -y clean $XSTDERR; then
	debug_echo "clean (success)."
	update_stamp $CLEAN_STAMP
    else
	debug_echo "clean (error)"
    fi
else
    debug_echo "clean (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	5	# Values here are the default.
f9be02d7	6	# Create /etc/apt/apt.conf.d/10periodic file to set your preference.
8a139d4d	7	#
ff7c76f8 OA	8	# Dir "/";
ff7c76f8 OA	9	# - RootDir for all configuration files
8a139d4d	10	#
0d0bdb60	11	# Dir::Cache "var/cache/apt/";
ff7c76f8 OA	12	# - Set apt package cache directory
ff7c76f8 OA	13	#
c1cde32e	14	# Dir::Cache::Archives "archives/";
ff7c76f8 OA	15	# - Set package archive directory
ff7c76f8 OA	16	#
17443d48 JAK	17	# APT::Periodic::Enable "1";
	18	# - Enable the update/upgrade script (0=disable)
	19	#
ff7c76f8 OA	20	# APT::Periodic::BackupArchiveInterval "0";
	21	# - Backup after n-days if archive contents changed.(0=disable)
	22	#
	23	# APT::Periodic::BackupLevel "3";
	24	# - Backup level.(0=disable), 1 is invalid.
	25	#
	26	# Dir::Cache::Backup "backup/";
	27	# - Set periodic package backup directory
	28	#
	29	# APT::Archives::MaxAge "0"; (old, deprecated)
	30	# APT::Periodic::MaxAge "0"; (new)
8a139d4d MV	31	# - Set maximum allowed age of a cache package file. If a cache
	32	# package file is older it is deleted (0=disable)
	33	#
ff7c76f8 OA	34	# APT::Archives::MinAge "2"; (old, deprecated)
	35	# APT::Periodic::MinAge "2"; (new)
	36	# - Set minimum age of a package file. If a file is younger it
1e3f4083	37	# will not be deleted (0=disable). Useful to prevent races
ff7c76f8 OA	38	# and to keep backups of the packages for emergency.
	39	#
	40	# APT::Archives::MaxSize "0"; (old, deprecated)
	41	# APT::Periodic::MaxSize "0"; (new)
8a139d4d MV	42	# - Set maximum size of the cache in MB (0=disable). If the cache
8a139d4d MV	43	# is bigger, cached package files are deleted until the size
12c4e7c9	44	# requirement is met (the oldest packages will be deleted
8a139d4d MV	45	# first).
8a139d4d MV	46	#
ff7c76f8 OA	47	# APT::Periodic::Update-Package-Lists "0";
	48	# - Do "apt-get update" automatically every n-days (0=disable)
	49	#
	50	# APT::Periodic::Download-Upgradeable-Packages "0";
	51	# - Do "apt-get upgrade --download-only" every n-days (0=disable)
6b519e42 JAK	52	#
	53	# APT::Periodic::Download-Upgradeable-Packages-Debdelta "1";
	54	# - Use debdelta-upgrade to download updates if available (0=disable)
	55	#
ff7c76f8 OA	56	# APT::Periodic::Unattended-Upgrade "0";
	57	# - Run the "unattended-upgrade" security upgrade script
	58	# every n-days (0=disabled)
	59	# Requires the package "unattended-upgrades" and will write
	60	# a log in /var/log/unattended-upgrades
8a139d4d	61	#
ff7c76f8 OA	62	# APT::Periodic::AutocleanInterval "0";
	63	# - Do "apt-get autoclean" every n-days (0=disable)
	64	#
73d52d65 MV	65	# APT::Periodic::CleanInterval "0";
	66	# - Do "apt-get clean" every n-days (0=disable)
	67	#
ff7c76f8 OA	68	# APT::Periodic::Verbose "0";
	69	# - Send report mail to root
	70	# 0: no report (or null string)
	71	# 1: progress report (actually any string)
	72	# 2: + command outputs (remove -qq, remove 2>/dev/null, add -d)
	73	# 3: + trace on
1d6afdd9	74	#
0c132682	75
05f6a46a	76	check_stamp()
0c132682	77	{
05f6a46a MZ	78	stamp="$1"
	79	interval="$2"
	80
10946ddc	81	if [ $interval -eq 0 ]; then
53391d0f	82	debug_echo "check_stamp: interval=0"
ff7c76f8	83	# treat as no time has passed
10946ddc MZ	84	return 1
	85	fi
	86
05f6a46a	87	if [ ! -f $stamp ]; then
ff7c76f8 OA	88	debug_echo "check_stamp: missing time stamp file: $stamp."
ff7c76f8 OA	89	# treat as enough time has passed
05f6a46a	90	return 0
0c132682	91	fi
05f6a46a MZ	92
05f6a46a MZ	93	# compare midnight today to midnight the day the stamp was updated
a7c526b6 MV	94	stamp_file="$stamp"
	95	stamp=$(date --date=$(date -r $stamp_file --iso-8601) +%s 2>/dev/null)
	96	if [ "$?" != "0" ]; then
	97	# Due to some timezones returning 'invalid date' for midnight on
e9db7e74	98	# certain dates (e.g. America/Sao_Paulo), if date returns with error
a7c526b6 MV	99	# remove the stamp file and return 0. See coreutils bug:
	100	# http://lists.gnu.org/archive/html/bug-coreutils/2007-09/msg00176.html
	101	rm -f "$stamp_file"
	102	return 0
	103	fi
	104
	105	now=$(date --date=$(date --iso-8601) +%s 2>/dev/null)
	106	if [ "$?" != "0" ]; then
	107	# As above, due to some timezones returning 'invalid date' for midnight
e9db7e74	108	# on certain dates (e.g. America/Sao_Paulo), if date returns with error
a7c526b6 MV	109	# return 0.
	110	return 0
	111	fi
	112
05f6a46a	113	delta=$(($now-$stamp))
05f6a46a	114
e9db7e74	115	# interval is in days, convert to sec.
8a139d4d	116	interval=$(($interval6060*24))
ff7c76f8	117	debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp, delta=$delta (sec)"
8a139d4d	118
6e7c6c3f MV	119	# remove timestamps a day (or more) in the future and force re-check
	120	if [ $stamp -gt $(($now+86400)) ]; then
	121	echo "WARNING: file $stamp_file has a timestamp in the future: $stamp"
	122	rm -f "$stamp_file"
	123	return 0
	124	fi
	125
05f6a46a MZ	126	if [ $delta -ge $interval ]; then
	127	return 0
	128	fi
	129
	130	return 1
	131	}
	132
	133	update_stamp()
	134	{
	135	stamp="$1"
05f6a46a	136	touch $stamp
0c132682 MZ	137	}
0c132682 MZ	138
6cce801a	139	# we check here if autoclean was enough sizewise
2e8a92e5	140	check_size_constraints()
6cce801a	141	{
6cce801a	142	MaxAge=0
6cce801a	143	eval $(apt-config shell MaxAge APT::Archives::MaxAge)
c98870b0 MV	144	eval $(apt-config shell MaxAge APT::Periodic::MaxAge)
	145
	146	MinAge=2
8a139d4d	147	eval $(apt-config shell MinAge APT::Archives::MinAge)
c98870b0 MV	148	eval $(apt-config shell MinAge APT::Periodic::MinAge)
	149
	150	MaxSize=0
6cce801a	151	eval $(apt-config shell MaxSize APT::Archives::MaxSize)
c98870b0 MV	152	eval $(apt-config shell MaxSize APT::Periodic::MaxSize)
c98870b0 MV	153
c1cde32e DK	154	Cache="/var/cache/apt/archives/"
c1cde32e DK	155	eval $(apt-config shell Cache Dir::Cache::archives/d)
6cce801a MV	156
6cce801a MV	157	# sanity check
c1cde32e DK	158	if [ -z "$Cache" ]; then
c1cde32e DK	159	echo "empty Dir::Cache::archives, exiting"
6cce801a MV	160	exit
6cce801a MV	161	fi
6cce801a MV	162
6cce801a MV	163	# check age
8a139d4d	164	if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
c98870b0	165	debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge and ctime>$MinAge and mtime>$MinAge"
8e29e348	166	find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 \| xargs -r -0 rm -f
8a139d4d	167	elif [ ! $MaxAge -eq 0 ]; then
c98870b0	168	debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge only"
8e29e348	169	find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 \| xargs -r -0 rm -f
c98870b0 MV	170	else
c98870b0 MV	171	debug_echo "skip aging since MaxAge is 0"
6cce801a MV	172	fi
	173
	174	# check size
	175	if [ ! $MaxSize -eq 0 ]; then
8a139d4d MV	176	# maxSize is in MB
	177	MaxSize=$(($MaxSize*1024))
	178
	179	#get current time
	180	now=$(date --date=$(date --iso-8601) +%s)
	181	MinAge=$(($MinAge2460*60))
	182
6cce801a	183	# reverse-sort by mtime
3408b58c	184	for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
6cce801a MV	185	du=$(du -s $Cache)
	186	size=${du%%/*}
	187	# check if the cache is small enough
	188	if [ $size -lt $MaxSize ]; then
c98870b0	189	debug_echo "end remove by archive size: size=$size < $MaxSize"
6cce801a MV	190	break
6cce801a MV	191	fi
8a139d4d MV	192
8a139d4d MV	193	# check for MinAge of the file
c98870b0	194	if [ $MinAge -ne 0 ]; then
8e29e348	195	# check both ctime and mtime
3971f8e8	196	mtime=$(stat -c %Y $file)
8e29e348 MV	197	ctime=$(stat -c %Z $file)
	198	if [ $mtime -gt $ctime ]; then
	199	delta=$(($now-$mtime))
	200	else
	201	delta=$(($now-$ctime))
	202	fi
8a139d4d	203	if [ $delta -le $MinAge ]; then
e838ca08	204	debug_echo "skip remove by archive size: $file, delta=$delta < $MinAge"
3408b58c	205	break
c98870b0 MV	206	else
c98870b0 MV	207	# delete oldest file
e838ca08	208	debug_echo "remove by archive size: $file, delta=$delta >= $MinAge (sec), size=$size >= $MaxSize"
c98870b0	209	rm -f $file
8a139d4d MV	210	fi
8a139d4d MV	211	fi
6cce801a MV	212	done
	213	fi
	214	}
	215
c98870b0 MV	216	# deal with the Apt::Periodic::BackupArchiveInterval
	217	do_cache_backup()
	218	{
	219	BackupArchiveInterval="$1"
	220	if [ $BackupArchiveInterval -eq 0 ]; then
	221	return
	222	fi
	223
	224	# Set default values and normalize
c1cde32e DK	225	CacheDir="/var/cache/apt"
c1cde32e DK	226	eval $(apt-config shell CacheDir Dir::Cache/d)
c98870b0 MV	227	CacheDir=${CacheDir%/}
	228	if [ -z "$CacheDir" ]; then
	229	debug_echo "practically empty Dir::Cache, exiting"
	230	return 0
	231	fi
	232
c1cde32e DK	233	Cache="${CacheDir}/archives/"
	234	eval $(apt-config shell Cache Dir::Cache::Archives/d)
	235	if [ -z "$Cache" ]; then
c98870b0 MV	236	debug_echo "practically empty Dir::Cache::archives, exiting"
	237	return 0
	238	fi
	239
	240	BackupLevel=3
	241	eval $(apt-config shell BackupLevel APT::Periodic::BackupLevel)
	242	if [ $BackupLevel -le 1 ]; then
	243	BackupLevel=2 ;
	244	fi
	245
c1cde32e DK	246	Back="${CacheDir}/backup/"
	247	eval $(apt-config shell Back Dir::Cache::Backup/d)
	248	if [ -z "$Back" ]; then
c98870b0 MV	249	echo "practically empty Dir::Cache::Backup, exiting" 1>&2
	250	return
	251	fi
	252
c1cde32e DK	253	CacheArchive="$(basename "${Cache}")"
c1cde32e DK	254	test -n "${CacheArchive}" \|\| CacheArchive="archives"
c98870b0 MV	255	BackX="${Back}${CacheArchive}/"
	256	for x in $(seq 0 1 $((${BackupLevel}-1))); do
	257	eval "Back${x}=${Back}${x}/"
	258	done
	259
	260	# backup after n-days if archive contents changed.
	261	# (This uses hardlink to save disk space)
	262	BACKUP_ARCHIVE_STAMP=/var/lib/apt/periodic/backup-archive-stamp
	263	if check_stamp $BACKUP_ARCHIVE_STAMP $BackupArchiveInterval; then
	264	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
	265	mkdir -p $Back
	266	rm -rf $Back$((${BackupLevel}-1))
	267	for y in $(seq $((${BackupLevel}-1)) -1 1); do
	268	eval BackY=${Back}$y
	269	eval BackZ=${Back}$(($y-1))
	270	if [ -e $BackZ ]; then
	271	mv -f $BackZ $BackY ;
	272	fi
	273	done
	274	cp -la $Cache $Back ; mv -f $BackX $Back0
	275	update_stamp $BACKUP_ARCHIVE_STAMP
	276	debug_echo "backup with hardlinks. (success)"
	277	else
	278	debug_echo "skip backup since same content."
	279	fi
	280	else
	281	debug_echo "skip backup since too new."
	282	fi
	283	}
	284
ff7c76f8	285	debug_echo()
6cce801a	286	{
ff7c76f8 OA	287	# Display message if $VERBOSE >= 1
	288	if [ "$VERBOSE" -ge 1 ]; then
	289	echo $1 1>&2
6cce801a	290	fi
ff7c76f8 OA	291	}
ff7c76f8 OA	292
c98870b0	293	# ------------------------ main ----------------------------
69c28efc	294
a3b76cde DK	295	if test -r /var/lib/apt/extended_states; then
	296	# Backup the 7 last versions of APT's extended_states file
	297	# shameless copy from dpkg cron
	298	if cd /var/backups ; then
	299	if ! cmp -s apt.extended_states.0 /var/lib/apt/extended_states; then
	300	cp -p /var/lib/apt/extended_states apt.extended_states
	301	savelog -c 7 apt.extended_states >/dev/null
	302	fi
a23a7811 DK	303	fi
	304	fi
	305
e9db7e74	306	# check apt-config existence
8deda84e	307	if ! which apt-config >/dev/null 2>&1; then
18d38975 OS	308	exit 0
18d38975 OS	309	fi
87ddfb96	310
17443d48 JAK	311	# check if the user really wants to do something
	312	AutoAptEnable=1 # default is yes
	313	eval $(apt-config shell AutoAptEnable APT::Periodic::Enable)
	314
9a64707c	315	if [ $AutoAptEnable -eq 0 ]; then
17443d48 JAK	316	exit 0
	317	fi
	318
ff7c76f8	319	# Set VERBOSE mode from apt-config (or inherit from environment)
6985efb3	320	VERBOSE=0
ff7c76f8	321	eval $(apt-config shell VERBOSE APT::Periodic::Verbose)
c98870b0	322	debug_echo "verbose level $VERBOSE"
ff7c76f8 OA	323	if [ "$VERBOSE" -le 2 ]; then
	324	# quiet for 0,1,2
	325	XSTDOUT=">/dev/null"
	326	XSTDERR="2>/dev/null"
	327	XAPTOPT="-qq"
	328	XUUPOPT=""
	329	else
	330	XSTDOUT=""
	331	XSTDERR=""
	332	XAPTOPT=""
	333	XUUPOPT="-d"
	334	fi
	335	if [ "$VERBOSE" -ge 3 ]; then
	336	# trace output
	337	set -x
	338	fi
8a139d4d	339
ff7c76f8	340	# check if we can lock the cache and if the cache is clean
8deda84e	341	if which apt-get >/dev/null 2>&1 && ! eval apt-get check $XAPTOPT $XSTDERR ; then
ff7c76f8 OA	342	debug_echo "error encountered in cron job with \"apt-get check\"."
	343	exit 0
	344	fi
8a139d4d	345
ff7c76f8 OA	346	# Global current time in seconds since 1970-01-01 00:00:00 UTC
ff7c76f8 OA	347	now=$(date +%s)
6cce801a	348
ff7c76f8	349	# Support old Archive for compatibility.
1e3f4083	350	# Document only Periodic for all controlling parameters of this script.
ff7c76f8	351
0c132682	352	UpdateInterval=0
ff7c76f8 OA	353	eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists)
ff7c76f8 OA	354
05f6a46a	355	DownloadUpgradeableInterval=0
ff7c76f8	356	eval $(apt-config shell DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
0c132682	357
fdd15654 MV	358	UnattendedUpgradeInterval=0
	359	eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
	360
ff7c76f8 OA	361	AutocleanInterval=0
	362	eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
	363
73d52d65 MV	364	CleanInterval=0
	365	eval $(apt-config shell CleanInterval APT::Periodic::CleanInterval)
	366
c98870b0 MV	367	BackupArchiveInterval=0
c98870b0 MV	368	eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)
ff7c76f8	369
6b519e42 JAK	370	Debdelta=1
	371	eval $(apt-config shell Debdelta APT::Periodic::Download-Upgradeable-Packages-Debdelta)
	372
879cbcc8	373	# check if we actually have to do anything that requires locking the cache
4c2dcaa1 MV	374	if [ $UpdateInterval -eq 0 ] &&
	375	[ $DownloadUpgradeableInterval -eq 0 ] &&
	376	[ $UnattendedUpgradeInterval -eq 0 ] &&
2783b261	377	[ $BackupArchiveInterval -eq 0 ] &&
73d52d65 MV	378	[ $AutocleanInterval -eq 0 ] &&
73d52d65 MV	379	[ $CleanInterval -eq 0 ]; then
879cbcc8 DK	380
	381	# check cache size
	382	check_size_constraints
	383
4c2dcaa1 MV	384	exit 0
4c2dcaa1 MV	385	fi
fdd15654	386
c98870b0 MV	387	# deal with BackupArchiveInterval
c98870b0 MV	388	do_cache_backup $BackupArchiveInterval
0c132682	389
966a4c53 MV	390	# include default system language so that "apt-get update" will
	391	# fetch the right translated package descriptions
	392	if [ -r /etc/default/locale ]; then
	393	. /etc/default/locale
6e239830	394	export LANG LANGUAGE LC_MESSAGES LC_ALL
966a4c53 MV	395	fi
966a4c53 MV	396
ff7c76f8	397	# update package lists
aff278bf	398	UPDATED=0
05f6a46a MZ	399	UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
05f6a46a MZ	400	if check_stamp $UPDATE_STAMP $UpdateInterval; then
ff7c76f8 OA	401	if eval apt-get $XAPTOPT -y update $XSTDERR; then
ff7c76f8 OA	402	debug_echo "download updated metadata (success)."
8deda84e	403	if which dbus-send >/dev/null 2>&1 && pidof dbus-daemon >/dev/null 2>&1; then
ff7c76f8 OA	404	if dbus-send --system / app.apt.dbus.updated boolean:true ; then
	405	debug_echo "send dbus signal (success)"
	406	else
	407	debug_echo "send dbus signal (error)"
	408	fi
	409	else
	410	debug_echo "dbus signal not send (command not available)"
05f6a46a	411	fi
ff7c76f8	412	update_stamp $UPDATE_STAMP
aff278bf	413	UPDATED=1
ff7c76f8	414	else
c98870b0	415	debug_echo "download updated metadata (error)"
05f6a46a	416	fi
ff7c76f8 OA	417	else
ff7c76f8 OA	418	debug_echo "download updated metadata (not run)."
fdd15654	419	fi
c98870b0 MV	420
	421	# download all upgradeable packages (if it is requested)
	422	DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
aff278bf	423	if [ $UPDATED -eq 1 ] && check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
6b519e42 JAK	424	if [ $Debdelta -eq 1 ]; then
	425	debdelta-upgrade >/dev/null 2>&1 \|\| true
	426	fi
c98870b0 MV	427	if eval apt-get $XAPTOPT -y -d dist-upgrade $XSTDERR; then
	428	update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
	429	debug_echo "download upgradable (success)"
	430	else
	431	debug_echo "download upgradable (error)"
	432	fi
	433	else
	434	debug_echo "download upgradable (not run)"
	435	fi
	436
	437	# auto upgrade all upgradeable packages
	438	UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
8deda84e	439	if which unattended-upgrade >/dev/null 2>&1 && check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
c98870b0 MV	440	if unattended-upgrade $XUUPOPT; then
	441	update_stamp $UPGRADE_STAMP
	442	debug_echo "unattended-upgrade (success)"
	443	else
	444	debug_echo "unattended-upgrade (error)"
	445	fi
	446	else
	447	debug_echo "unattended-upgrade (not run)"
	448	fi
fdd15654	449
73d52d65 MV	450	# clean package archive
	451	CLEAN_STAMP=/var/lib/apt/periodic/clean-stamp
	452	if check_stamp $CLEAN_STAMP $CleanInterval; then
	453	if eval apt-get $XAPTOPT -y clean $XSTDERR; then
	454	debug_echo "clean (success)."
	455	update_stamp $CLEAN_STAMP
	456	else
	457	debug_echo "clean (error)"
	458	fi
	459	else
	460	debug_echo "clean (not run)"
	461	fi
	462
ff7c76f8	463	# autoclean package archive
de15fbae MV	464	AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp
de15fbae MV	465	if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then
c98870b0	466	if eval apt-get $XAPTOPT -y autoclean $XSTDERR; then
ff7c76f8 OA	467	debug_echo "autoclean (success)."
	468	update_stamp $AUTOCLEAN_STAMP
	469	else
c98870b0	470	debug_echo "autoclean (error)"
ff7c76f8 OA	471	fi
ff7c76f8 OA	472	else
c98870b0	473	debug_echo "autoclean (not run)"
de15fbae MV	474	fi
de15fbae MV	475
0fad7309 MV	476	# check cache size
	477	check_size_constraints
	478
ff7c76f8 OA	479	#
	480	# vim: set sts=4 ai :
	481	#
	482