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https://0xacab.org/liberate/backupninja.git
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not working yet, but i am checking in changes
This commit is contained in:
Elijah Saxon
parent
6dc566098a
commit
e8615f15d3
121
handlers/maildir
121
handlers/maildir
@ -1,12 +1,18 @@
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#!/usr/bin/php4 -q
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<?php
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###############################################################
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#
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# This handler slowly creates a backup of each user's maildir
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# to a remote server. It is designed to be run with low overhead
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# in terms of cpu and bandwidth so it runs pretty slow.
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#
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# if destdir is /backup/maildir/, then it will contain the files
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# daily.1
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# daily.2
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# daily.3
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# weekly.1
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# weekly.2
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# monthly.1
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# if keepdaily is 3, keepweekly is 2, and keepmonthly is 1.
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#
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##############################################################
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getconf rotate yes
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@ -14,8 +20,9 @@ getconf remove yes
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getconf loadlimit 5
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getconf speedlimit 0
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getconf keepdaily 7
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getconf keepweekly 4
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getconf keepdaily 5
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getconf keepweekly 3
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getconf keepmonthly 1
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getconf srcdir /var/maildir
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getconf destdir
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@ -23,6 +30,10 @@ getconf desthost
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getconf destport 22
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getconf destuser
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# strip trailing /
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destdir=${destdir%/}
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srcdir=${srcdir%/}
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# used for testing
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getconf letter
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getconf user
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@ -47,6 +58,14 @@ fi
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##################################################################
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### FUNCTIONS
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# remote run the args remotely
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function rrun() {
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debug ssh -o PasswordAuthentication=no $desthost -l $destuser $@
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if [ ! $test ]; then
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debug ssh -o PasswordAuthentication=no $desthost -l $destuser $@
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fi
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}
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function do_letters() {
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for i in a b c d e f g h i j k l m n o p q r s t u v w x y z; do
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do_maildirs "$srcdir/$i"
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@ -91,7 +110,7 @@ function do_remove() {
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for i in a b c d e f g h i j k l m n o p q r s t u v w x y z; do
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ls -1 "$srcdir/$i" | sort > $tmp1
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ssh -p $destport $desthost 'ls -1 '$destdir/maildir/$i' | sort > $tmp2
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ssh -p $destport $desthost ls -1 '$destdir/maildir/$i' | sort > $tmp2
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for deluser in `join -v 2 $tmp1 $tmp2`; do
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cmd="ssh -p $destport $desthost rm -vr '$destdir/maildir/$i/$deluser/'"
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debug $cmd
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@ -101,27 +120,105 @@ function do_remove() {
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rm $tmp2
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}
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function do_rotate() {
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backuproot=$destdir
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now=`date %s`
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seconds_daily=86400
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seconds_weekly=604800
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seconds_monthly=2628000
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ssh -o PasswordAuthentication=no $desthost -l $destuser <<EOF
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keepdaily=$keepdaily
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keepweekly=$keepweekly
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keepmonthly=$keepmonthly
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for rottype in daily weekly monthly; do
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seconds=\`echo seconds_\${rottype}\`
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dir="$backuproot/\$rottype"
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if [ ! -d \$dir.1 ]; then
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echo "Warning: \$dir.1 does not exist. This backup is missing, so we are skipping the rotation."
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continue
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elif [ ! -f \$dir.1/created ]; then
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echo "Warning: \$dir.1/created does not exist. This backup may be only partially completed, so we are skipping the rotation."
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continue
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fi
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# Rotate the current list of backups, if we can.
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oldest=\`ls -d $\dir.* | sed 's/^.*\.//' | sort -n | tail -1\`
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for (( i=\$oldest; i > 0; i-- )); do
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if [ -d \$dir.\$i ]; then
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if [ -f \$dir.\$i/rotated ]; then
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rotated=\`tail -1 \$dir.\$i/rotated\`
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else
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rotated=0
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fi
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cutoff_time=\$(( now - (seconds*i) ))
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if [ \$rotated -gt \$cutoff_time ]; then
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next=\$(( i + 1 ))
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echo "mv \$dir.\$i \$dir.\$next"
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mv \$dir.\$i \$dir.\$next
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date +%c%n%s > \$dir.\$next/rotated
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else
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echo "Info: skipping rotation of \$dir.\$i because it was already rotated within the last " \$((cutoff_time/86400)) " days."
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fi
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fi
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done
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done
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max=\$((keepdaily+1))
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if [ ( \$keepweekly -a -d $backuproot/daily.\$max ) -a ! -d $backuproot/weekly.1 ]; then
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echo mv $backuproot/daily.\$max $backuproot/weekly.1
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mv $backuproot/daily.\$max $backuproot/weekly.1
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date +%c%n%s > $backuproot/weekly.1/rotated
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fi
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max=\$((keepweekly+1))
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if [ ( \$keepmonthly -a -d $backuproot/weekly.\$max ) -a ! -d $backuproot/monthly.1 ]; then
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echo mv $backuproot/weekly.\$max $backuproot/monthly.1
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mv $backuproot/weekly.\$max $backuproot/monthly.1
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date +%c%n%s > $backuproot/monthly.1/rotated
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fi
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for rottype in daily weekly monthly; do
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max=\`echo keep\${rottype}\`
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max=\$((max+1))
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dir="$backuproot/\$rottype"
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oldest=\`ls -d $\dir.* | sed 's/^.*\.//' | sort -n | tail -1\`
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# if we've rotated the last backup off the stack, remove it.
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for (( i=\$oldest; i >= \$max; i-- )); do
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if [ -d \$dir.\$i ]; then
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echo "Info: removing \$dir.\$i"
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rm -rf \$dir.\$i
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fi
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done
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done
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EOF
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}
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###
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##################################################################
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### ROTATE BACKUPS ###
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if [ "$remove" == "yes" ]; then
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if [ "$rotate" == "yes" ]; then
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do_rotate
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fi
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### REMOVE OLD MAILDIRS ###
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if [ "$rotate" == "yes" ]; then
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if [ "$remove" == "yes" ]; then
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debug remove
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fi
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### ROTATE BACKUPS ###
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if [ "$letter" != "" ]; then
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debug letter
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fi
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if [ "$user" != "" ]; then
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debug user
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fi
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