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| -rw-r--r-- | handlers/maildir | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/handlers/maildir b/handlers/maildir new file mode 100644 index 0000000..c07cd7e --- /dev/null +++ b/handlers/maildir @@ -0,0 +1,127 @@ +#!/usr/bin/php4 -q +<?php + +############################################################### +# +# This handler slowly creates a backup of each user's maildir +# to a remote server. It is designed to be run with low overhead +# in terms of cpu and bandwidth so it runs pretty slow. +# +############################################################## + +getconf rotate yes +getconf remove yes + +getconf loadlimit 5 +getconf speedlimit 0 +getconf keepdaily 7 +getconf keepweekly 4 + +getconf srcdir /var/maildir +getconf destdir +getconf desthost +getconf destport 22 +getconf destuser + +# used for testing +getconf letter +getconf user + +[ -d $srcdir ] || fatal "source directory $srcdir doesn't exist" + +[ ! $test ] || testflags="--dry-run -v" +rsyncflags="$testflags -e 'ssh -p $destport'" +flags_mail="$rsyncflags --archive --ignore-existing --delete --numeric-ids --size-only --bwlimit=$speedlimit" +flags_folders="$rsyncflags --archive --delete --numeric-ids" +excludes='--exclude ".Trash/*" --exclude ".Mistakes/*" --exclude ".Spam/*"' + +# see if we can login +debug "ssh -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1'" +if [ ! $test ]; then + result=`ssh -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1' 2>&1` + if [ "$result" != "1" ]; then + fatal "Can't connect to $desthost as $destuser." + fi +fi + +################################################################## +### FUNCTIONS + +function do_letters() { + for i in a b c d e f g h i j k l m n o p q r s t u v w x y z; do + do_maildirs "$srcdir/$i" + done +} + +function do_maildirs() { + local dir=$1 + [ -d $dir ] || fatal "directory $dir not found." + for userdir in `ls -1 $dir`; do + do_userdir $userdir + done +} + +function do_user() { + local user=$1 + local letter=${user:0:1} + local dir="$srcdir/$letter/$user" + [ -d $dir ] || fatal "maildir $dir not found". + + while 1; do + load=`uptime | sed 's/^.*load average: \\([^,]*\\).*$/\\1/'` + if [ $load -lt $loadlimit ]; then + info "load $load, sleeping..." + sleep 600 + else + break + fi + done + + cmd="rsync $maildirrsyncflags $excludes '$dir' '$destuser@$desthost:$destdir/maildir/$letter'" + debug $cmd + # ret=`rsync $maildirrsyncflags $excludes '$dir' '$destuser@$desthost:$destdir/maildir/$letter' 2>&1` +} + +# remove any maildirs from backup which might have been deleted +# and add new ones which have just been created. + +function do_remove() { + local tmp1=/tmp/maildirtmpfile$$ + local tmp2=/tmp/maildirtmpfile$$ + + 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 + ls -1 "$srcdir/$i" | sort > $tmp1 + ssh -p $destport $desthost 'ls -1 '$destdir/maildir/$i' | sort > $tmp2 + for deluser in `join -v 2 $tmp1 $tmp2`; do + cmd="ssh -p $destport $desthost rm -vr '$destdir/maildir/$i/$deluser/'" + debug $cmd + done + done + rm $tmp1 + rm $tmp2 +} + +### +################################################################## + +### ROTATE BACKUPS ### + +if [ "$remove" == "yes" ]; then + +fi + +### REMOVE OLD MAILDIRS ### + +if [ "$rotate" == "yes" ]; then + +fi + +### ROTATE BACKUPS ### + +if [ "$letter" != "" ]; then + +fi + +if [ "$user" != "" ]; then + +fi |