interval="$2"
if [ $interval -eq 0 ]; then
- debug_echo "check_stamp: interval=0."
+ 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."
+ 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 $stamp '+%s')
+ stamp_file="$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
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 $VERBOSE >= 1
fi
}
+
+# ----------------- main ----------------
+
# check apt-config exstance
if ! which apt-config >/dev/null ; then
exit 0
# trace output
set -x
fi
+
# laptop check, on_ac_power returns:
# 0 (true) System is on main power
# 1 (false) System is not on main power
on_ac_power
POWER=$?
if [ $POWER -eq 1 ]; then
- debug_echo "exit: system on main power."
+ debug_echo "exit: system NOT on main power."
exit 0
elif [ $POWER -ne 0 ]; then
- debug_echo "exit: power status ($POWER) undetermined."
- exit 0
+ 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 && ! eval apt-get check $XAPTOPT $XSTDERR ; then
+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
BackupLevel=3
eval $(apt-config shell BackupLevel APT::Periodic::BackupLevel)
-if [ $BackupLevel -le 1 ]; then BackupLevel=2 ; fi
+if [ $BackupLevel -le 1 ]; then
+ BackupLevel=2 ;
+fi
CacheBackup="backup/"
eval $(apt-config shell CacheBackup Dir::Cache::Backup)
CacheBackup=${CacheBackup%/}
if [ -z "$CacheBackup" ]; then
- echo "practically empty Dir::Cache::Backup, exiting" 1>&2
- exit 0
+ echo "empty Dir::Cache::Backup, using default" 1>&2
+ CacheBackup="backup/"
fi
# Support old Archive for compatibility.
eval "Back${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
projects / apt.git / blobdiff