make it bzr-buildpackage able

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

diff --git a/debian/apt.cron.daily b/debian/apt.cron.daily
index ec53a7f2f73b10c92044df358e91211cfd4390d8..cdec7eea00315e0d5c3896448498c740a37396a3 100644 (file)
--- a/debian/apt.cron.daily
+++ b/debian/apt.cron.daily
@@ -1,40 +1,67 @@
 #!/bin/sh
 #!/bin/sh

-#
-

 #set -e
 #
 # This file understands the following apt configuration variables:
 #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.

 #
 #

-#  "APT::Periodic::Update-Package-Lists=1"
-#  - 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::AutocleanInterval"
-#  - Do "apt-get autoclean" every n-days (0=disable)
+#  Dir "/";
+#  - RootDir for all configuration files

 #
 #

-#  "APT::Periodic::Unattended-Upgrade"
-#  - Run the "unattended-upgrade" security upgrade script 
-#    every n-days (0=disabled)
-#    Requires the package "unattended-upgrades" and will write
-#    a log in /var/log/unattended-upgrades
-# 
-#  "APT::Archives::MaxAge",
+#  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)
 #
 #  - Set maximum allowed age of a cache package file. If a cache 
 #    package file is older it is deleted (0=disable)
 #

-#  "APT::Archives::MaxSize",
+#  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).
 #
 #  - Set maximum size of the cache in MB (0=disable). If the cache
 #    is bigger, cached package files are deleted until the size
 #    requirement is met (the biggest packages will be deleted 
 #    first).
 #

-#  "APT::Archives::MinAge"
-#  - Set minimum age of a package file. If a file is younger it
-#    will not be deleted (0=disable). Usefull to prevent races 
-#    and to keep backups of the packages for emergency.
+#  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()
 {
 
 check_stamp()
 {


@@ -42,22 +69,25 @@ check_stamp()
     interval="$2"
 
     if [ $interval -eq 0 ]; then
     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
         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
         return 0
     fi
 
     # compare midnight today to midnight the day the stamp was updated

-    stamp=$(date --date=$(date -r $stamp --iso-8601) +%s)
-    now=$(date --date=$(date --iso-8601) +%s)
+    stamp=$(date -r $stamp '+%s')

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

-    # intervall is in days,
+    # intervall is in days, convert to sec.

     interval=$(($interval*60*60*24))
     interval=$(($interval*60*60*24))

-    #echo "stampfile: $1"
-    #echo "interval=$interval, now=$now, stamp=$stamp, delta=$delta"
+    debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp, delta=$delta (sec)"

 
     if [ $delta -ge $interval ]; then
         return 0
 
     if [ $delta -ge $interval ]; then
         return 0


@@ -69,12 +99,9 @@ check_stamp()
 update_stamp()
 {
     stamp="$1"
 update_stamp()
 {
     stamp="$1"

-

     touch $stamp
 }
 
     touch $stamp
 }
 

-
-

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


@@ -147,7 +174,7 @@ check_size_constraints()
     fi
 }
 
     fi
 }
 

-# sleep for a random intervall of time (default 30min)
+# sleep for a random interval of time (default 30min)

 # (some code taken from cron-apt, thanks)
 random_sleep()
 {
 # (some code taken from cron-apt, thanks)
 random_sleep()
 {


@@ -164,75 +191,282 @@ random_sleep()
     sleep $TIME
 }
 
     sleep $TIME
 }
 

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

 # main
 
 # main
 

-if ! which apt-config >/dev/null; then
+# check apt-config exstance
+if ! which apt-config >/dev/null ; then

        exit 0
 fi
 
        exit 0
 fi
 

-UpdateInterval=0
-DownloadUpgradeableInterval=0
-eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
-AutocleanInterval=$DownloadUpgradeableInterval
-eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
-
-UnattendedUpgradeInterval=0
-eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
-
+# 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:
 
 # laptop check, on_ac_power returns:

-#       0 (true)    System is on mains power
-#       1 (false)   System is not on mains power
+#       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
 #       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

-    if [ $? -eq 1 ]; then
+    POWER=$?
+    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
        exit 0
     fi

+    debug_echo "system is on main power."

 fi
 
 # check if we can lock the cache and if the cache is clean
 fi
 
 # check if we can lock the cache and if the cache is clean

-if ! apt-get check -q -q 2>/dev/null; then
-    echo "$0: could not lock the APT cache"
-    exit 1
+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
 
 fi
 

-# sleep random amount of time
-random_sleep
+BackupArchiveInterval=0
+eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)

 
 

-# check again if we can access the cache
-if ! apt-get check -q -q 2>/dev/null; then
-    exit 1
+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
 
 fi
 

-UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
-if check_stamp $UPDATE_STAMP $UpdateInterval; then
-    if apt-get -qq update 2>/dev/null; then
-       if which dbus-send >/dev/null; then
-           dbus-send --system / app.apt.dbus.updated boolean:true
-       fi
-        update_stamp $UPDATE_STAMP
+# 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
     fi

+else
+       debug_echo "skip backup since too new."

 fi
 
 fi
 

-DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
-if check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
-    apt-get -qq -d dist-upgrade 2>/dev/null
-    update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
+# 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
 
 fi
 

-UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
-if check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
-    unattended-upgrade
-    update_stamp $UPGRADE_STAMP
+# 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
 
 fi
 

+# autoclean package archive

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

-    apt-get -qq autoclean
-    update_stamp $AUTOCLEAN_STAMP
+    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
 
 fi
 

-# check cache size 
-check_size_constraints
+#
+#     vim: set sts=4 ai :
+#
+