diff options
Diffstat (limited to 'handlers/maildir.in')
| -rw-r--r-- | handlers/maildir.in | 453 |
1 files changed, 226 insertions, 227 deletions
diff --git a/handlers/maildir.in b/handlers/maildir.in index d5731be..e88619d 100644 --- a/handlers/maildir.in +++ b/handlers/maildir.in @@ -6,17 +6,17 @@ # to a remote server. It is designed to be run with low overhead # in terms of cpu and bandwidth so it runs pretty slow. # Hardlinking is used to save storage space. -# +# # This handler expects that your maildir directory structure is # either one of the following: -# -# 1. /$srcdir/[a-zA-Z0-9]/$user for example: +# +# 1. /$srcdir/[a-zA-Z0-9]/$user for example: # /var/maildir/a/anarchist # /var/maildir/a/arthur # ... # /var/maildir/Z/Zaphod # /var/maildir/Z/Zebra -# +# # 2. or the following: # /var/maildir/domain.org/user1 # /var/maildir/domain.org/user2 @@ -25,7 +25,7 @@ # /var/maildir/anotherdomain.org/user2 # ... # -# if the configuration is setup to have keepdaily at 3, +# if the configuration is setup to have keepdaily at 3, # keepweekly is 2, and keepmonthly is 1, then each user's # maildir backup snapshot directory will contain these files: # daily.1 @@ -41,15 +41,15 @@ # We handle each maildir individually because it becomes very # unweldy to hardlink and rsync many hundreds of thousands # of files at once. It is much faster to take on smaller -# chunks at a time. +# chunks at a time. # -# For the backup rotation to work, destuser must be able to run +# For the backup rotation to work, destuser must be able to run # arbitrary bash commands on the desthost. # # Any maildir which is deleted from the source will be moved to -# "deleted" directory in the destination. It is up to you to +# "deleted" directory in the destination. It is up to you to # periodically remove this directory or old maildirs in it. -# +# ############################################################## getconf rotate yes @@ -91,33 +91,33 @@ excludes="--exclude '.Trash/\*' --exclude '.Mistakes/\*' --exclude '.Spam/\*'" ### FUNCTIONS function do_user() { - local user=$1 - local btype=$2 - local userdir=${3%/} - local source="$srcdir/$userdir/$user/" - local target="$destdir/$userdir/$user/$btype.1" - if [ ! -d $source ]; then - warning "maildir $source not found" - return - fi - - debug "syncing" - ret=`$RSYNC -e "ssh -p $destport -i $destid_file" -r \ - --links --ignore-existing --delete --size-only --bwlimit=$speedlimit \ - --exclude '.Trash/*' --exclude '.Mistakes/*' --exclude '.Spam/*' \ - $source $destuser@$desthost:$target \ - 2>&1` - ret=$? - # ignore 0 (success) and 24 (file vanished before it could be copied) - if [ $ret != 0 -a $ret != 24 ]; then - warning "rsync $user failed" - warning " returned: $ret" - let "failedcount = failedcount + 1" - if [ $failedcount -gt 100 ]; then - fatal "100 rsync errors -- something is not working right. bailing out." - fi - fi - ssh -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file "date +%c%n%s > $target/created" + local user=$1 + local btype=$2 + local userdir=${3%/} + local source="$srcdir/$userdir/$user/" + local target="$destdir/$userdir/$user/$btype.1" + if [ ! -d $source ]; then + warning "maildir $source not found" + return + fi + + debug "syncing" + ret=`$RSYNC -e "ssh -p $destport -i $destid_file" -r \ + --links --ignore-existing --delete --size-only --bwlimit=$speedlimit \ + --exclude '.Trash/*' --exclude '.Mistakes/*' --exclude '.Spam/*' \ + $source $destuser@$desthost:$target \ + 2>&1` + ret=$? + # ignore 0 (success) and 24 (file vanished before it could be copied) + if [ $ret != 0 -a $ret != 24 ]; then + warning "rsync $user failed" + warning " returned: $ret" + let "failedcount = failedcount + 1" + if [ $failedcount -gt 100 ]; then + fatal "100 rsync errors -- something is not working right. bailing out." + fi + fi + ssh -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file "date +%c%n%s > $target/created" } # remove any maildirs from backup which might have been deleted @@ -125,116 +125,116 @@ function do_user() { # (actually, it just moved them to the directory "deleted") function do_remove() { - local tmp1=`maketemp maildir-tmp-file` - local tmp2=`maketemp maildir-tmp-file` - - ssh -p $destport -i $destid_file $destuser@$desthost mkdir -p "$destdir/deleted" - cd "$srcdir" - for userdir in `ls -d1 */`; do - ls -1 "$srcdir/$userdir" | sort > $tmp1 - ssh -p $destport -i $destid_file $destuser@$desthost ls -1 "$destdir/$userdir" | sort > $tmp2 - for deluser in `join -v 2 $tmp1 $tmp2`; do - [ "$deluser" != "" ] || continue - info "removing $destuser@$desthost:$destdir/$userdir$deluser/" - ssh -p $destport -i $destid_file $destuser@$desthost mv "$destdir/$userdir$deluser/" "$destdir/deleted" - ssh -p $destport -i $destid_file $destuser@$desthost "date +%c%n%s > '$destdir/deleted/$deluser/deleted_on'" - done - done - rm $tmp1 - rm $tmp2 + local tmp1=`maketemp maildir-tmp-file` + local tmp2=`maketemp maildir-tmp-file` + + ssh -p $destport -i $destid_file $destuser@$desthost mkdir -p "$destdir/deleted" + cd "$srcdir" + for userdir in `ls -d1 */`; do + ls -1 "$srcdir/$userdir" | sort > $tmp1 + ssh -p $destport -i $destid_file $destuser@$desthost ls -1 "$destdir/$userdir" | sort > $tmp2 + for deluser in `join -v 2 $tmp1 $tmp2`; do + [ "$deluser" != "" ] || continue + info "removing $destuser@$desthost:$destdir/$userdir$deluser/" + ssh -p $destport -i $destid_file $destuser@$desthost mv "$destdir/$userdir$deluser/" "$destdir/deleted" + ssh -p $destport -i $destid_file $destuser@$desthost "date +%c%n%s > '$destdir/deleted/$deluser/deleted_on'" + done + done + rm $tmp1 + rm $tmp2 } function do_rotate() { - [ "$rotate" == "yes" ] || return; - local user=$1 - local userdir=${2%/} - local backuproot="$destdir/$userdir/$user" + [ "$rotate" == "yes" ] || return; + local user=$1 + local userdir=${2%/} + local backuproot="$destdir/$userdir/$user" ( - ssh -T -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file <<EOF + ssh -T -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file <<EOF ##### BEGIN REMOTE SCRIPT ##### - seconds_daily=86400 - seconds_weekly=604800 - seconds_monthly=2628000 - keepdaily=$keepdaily - keepweekly=$keepweekly - keepmonthly=$keepmonthly - now=\`date +%s\` - - if [ ! -d "$backuproot" ]; then - echo "Debug: skipping rotate of $user. $backuproot doesn't exist." - exit - fi - for rottype in daily weekly monthly; do - seconds=\$((seconds_\${rottype})) - - dir="$backuproot/\$rottype" - if [ ! -d \$dir.1 ]; then - echo "Debug: \$dir.1 does not exist, skipping." - continue 1 - elif [ ! -f \$dir.1/created ]; then - echo "Warning: \$dir.1/created does not exist. This backup may be only partially completed. Skipping rotation." - continue 1 - fi - - # Rotate the current list of backups, if we can. - oldest=\`find $backuproot -maxdepth 1 -type d -name \$rottype'.*' | @SED@ 's/^.*\.//' | sort -n | tail -1\` - #echo "Debug: oldest \$oldest" - [ "\$oldest" == "" ] && oldest=0 - for (( i=\$oldest; i > 0; i-- )); do - if [ -d \$dir.\$i ]; then - if [ -f \$dir.\$i/created ]; then - created=\`tail -1 \$dir.\$i/created\` - else - created=0 - fi - cutoff_time=\$(( now - (seconds*(i-1)) )) - if [ ! \$created -gt \$cutoff_time ]; then - next=\$(( i + 1 )) - if [ ! -d \$dir.\$next ]; then - echo "Debug: \$rottype.\$i --> \$rottype.\$next" - mv \$dir.\$i \$dir.\$next - date +%c%n%s > \$dir.\$next/rotated - else - echo "Debug: skipping rotation of \$dir.\$i because \$dir.\$next already exists." - fi - else - echo "Debug: skipping rotation of \$dir.\$i because it was created" \$(( (now-created)/86400)) "days ago ("\$(( (now-cutoff_time)/86400))" needed)." - fi - fi - done - done - - max=\$((keepdaily+1)) - if [ \( \$keepweekly -gt 0 -a -d $backuproot/daily.\$max \) -a ! -d $backuproot/weekly.1 ]; then - echo "Debug: daily.\$max --> weekly.1" - mv $backuproot/daily.\$max $backuproot/weekly.1 - date +%c%n%s > $backuproot/weekly.1/rotated - fi - - max=\$((keepweekly+1)) - if [ \( \$keepmonthly -gt 0 -a -d $backuproot/weekly.\$max \) -a ! -d $backuproot/monthly.1 ]; then - echo "Debug: weekly.\$max --> monthly.1" - mv $backuproot/weekly.\$max $backuproot/monthly.1 - date +%c%n%s > $backuproot/monthly.1/rotated - fi - - for rottype in daily weekly monthly; do - max=\$((keep\${rottype}+1)) - dir="$backuproot/\$rottype" - oldest=\`find $backuproot -maxdepth 1 -type d -name \$rottype'.*' | @SED@ 's/^.*\.//' | sort -n | tail -1\` - [ "\$oldest" == "" ] && oldest=0 - # if we've rotated the last backup off the stack, remove it. - for (( i=\$oldest; i >= \$max; i-- )); do - if [ -d \$dir.\$i ]; then - if [ -d $backuproot/rotate.tmp ]; then - echo "Debug: removing rotate.tmp" - rm -rf $backuproot/rotate.tmp - fi - echo "Debug: moving \$rottype.\$i to rotate.tmp" - mv \$dir.\$i $backuproot/rotate.tmp - fi - done - done + seconds_daily=86400 + seconds_weekly=604800 + seconds_monthly=2628000 + keepdaily=$keepdaily + keepweekly=$keepweekly + keepmonthly=$keepmonthly + now=\`date +%s\` + + if [ ! -d "$backuproot" ]; then + echo "Debug: skipping rotate of $user. $backuproot doesn't exist." + exit + fi + for rottype in daily weekly monthly; do + seconds=\$((seconds_\${rottype})) + + dir="$backuproot/\$rottype" + if [ ! -d \$dir.1 ]; then + echo "Debug: \$dir.1 does not exist, skipping." + continue 1 + elif [ ! -f \$dir.1/created ]; then + echo "Warning: \$dir.1/created does not exist. This backup may be only partially completed. Skipping rotation." + continue 1 + fi + + # Rotate the current list of backups, if we can. + oldest=\`find $backuproot -maxdepth 1 -type d -name \$rottype'.*' | @SED@ 's/^.*\.//' | sort -n | tail -1\` + #echo "Debug: oldest \$oldest" + [ "\$oldest" == "" ] && oldest=0 + for (( i=\$oldest; i > 0; i-- )); do + if [ -d \$dir.\$i ]; then + if [ -f \$dir.\$i/created ]; then + created=\`tail -1 \$dir.\$i/created\` + else + created=0 + fi + cutoff_time=\$(( now - (seconds*(i-1)) )) + if [ ! \$created -gt \$cutoff_time ]; then + next=\$(( i + 1 )) + if [ ! -d \$dir.\$next ]; then + echo "Debug: \$rottype.\$i --> \$rottype.\$next" + mv \$dir.\$i \$dir.\$next + date +%c%n%s > \$dir.\$next/rotated + else + echo "Debug: skipping rotation of \$dir.\$i because \$dir.\$next already exists." + fi + else + echo "Debug: skipping rotation of \$dir.\$i because it was created" \$(( (now-created)/86400)) "days ago ("\$(( (now-cutoff_time)/86400))" needed)." + fi + fi + done + done + + max=\$((keepdaily+1)) + if [ \( \$keepweekly -gt 0 -a -d $backuproot/daily.\$max \) -a ! -d $backuproot/weekly.1 ]; then + echo "Debug: daily.\$max --> weekly.1" + mv $backuproot/daily.\$max $backuproot/weekly.1 + date +%c%n%s > $backuproot/weekly.1/rotated + fi + + max=\$((keepweekly+1)) + if [ \( \$keepmonthly -gt 0 -a -d $backuproot/weekly.\$max \) -a ! -d $backuproot/monthly.1 ]; then + echo "Debug: weekly.\$max --> monthly.1" + mv $backuproot/weekly.\$max $backuproot/monthly.1 + date +%c%n%s > $backuproot/monthly.1/rotated + fi + + for rottype in daily weekly monthly; do + max=\$((keep\${rottype}+1)) + dir="$backuproot/\$rottype" + oldest=\`find $backuproot -maxdepth 1 -type d -name \$rottype'.*' | @SED@ 's/^.*\.//' | sort -n | tail -1\` + [ "\$oldest" == "" ] && oldest=0 + # if we've rotated the last backup off the stack, remove it. + for (( i=\$oldest; i >= \$max; i-- )); do + if [ -d \$dir.\$i ]; then + if [ -d $backuproot/rotate.tmp ]; then + echo "Debug: removing rotate.tmp" + rm -rf $backuproot/rotate.tmp + fi + echo "Debug: moving \$rottype.\$i to rotate.tmp" + mv \$dir.\$i $backuproot/rotate.tmp + fi + done + done ####### END REMOTE SCRIPT ####### EOF ) | (while read a; do passthru $a; done) @@ -243,67 +243,67 @@ EOF function setup_remote_dirs() { - local user=$1 - local backuptype=$2 - local userdir=${3%/} - local dir="$destdir/$userdir/$user/$backuptype" - local tmpdir="$destdir/$userdir/$user/rotate.tmp" + local user=$1 + local backuptype=$2 + local userdir=${3%/} + local dir="$destdir/$userdir/$user/$backuptype" + local tmpdir="$destdir/$userdir/$user/rotate.tmp" ( - ssh -T -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file <<EOF - if [ ! -d $destdir ]; then - echo "Fatal: Destination directory $destdir does not exist on host $desthost." - exit 1 - elif [ -d $dir.1 ]; then - if [ -f $dir.1/created ]; then - echo "Warning: $dir.1 already exists. Overwriting contents." - else - echo "Warning: we seem to be resuming a partially written $dir.1" - fi - else - if [ -d $tmpdir ]; then - mv $tmpdir $dir.1 - if [ \$? == 1 ]; then - echo "Fatal: could mv $destdir/rotate.tmp $dir.1 on host $desthost" - exit 1 - fi - else - mkdir --parents $dir.1 - if [ \$? == 1 ]; then - echo "Fatal: could not create directory $dir.1 on host $desthost" - exit 1 - fi - fi - if [ -d $dir.2 ]; then - echo "Debug: update links $backuptype.2 --> $backuptype.1" - cp -alf $dir.2/. $dir.1 - #if [ \$? == 1 ]; then - # echo "Fatal: could not create hard links to $dir.1 on host $desthost" - # exit 1 - #fi - fi - fi - [ -f $dir.1/created ] && rm $dir.1/created - [ -f $dir.1/rotated ] && rm $dir.1/rotated - exit 0 + ssh -T -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file <<EOF + if [ ! -d $destdir ]; then + echo "Fatal: Destination directory $destdir does not exist on host $desthost." + exit 1 + elif [ -d $dir.1 ]; then + if [ -f $dir.1/created ]; then + echo "Warning: $dir.1 already exists. Overwriting contents." + else + echo "Warning: we seem to be resuming a partially written $dir.1" + fi + else + if [ -d $tmpdir ]; then + mv $tmpdir $dir.1 + if [ \$? == 1 ]; then + echo "Fatal: could mv $destdir/rotate.tmp $dir.1 on host $desthost" + exit 1 + fi + else + mkdir --parents $dir.1 + if [ \$? == 1 ]; then + echo "Fatal: could not create directory $dir.1 on host $desthost" + exit 1 + fi + fi + if [ -d $dir.2 ]; then + echo "Debug: update links $backuptype.2 --> $backuptype.1" + cp -alf $dir.2/. $dir.1 + #if [ \$? == 1 ]; then + # echo "Fatal: could not create hard links to $dir.1 on host $desthost" + # exit 1 + #fi + fi + fi + [ -f $dir.1/created ] && rm $dir.1/created + [ -f $dir.1/rotated ] && rm $dir.1/rotated + exit 0 EOF ) | (while read a; do passthru $a; done) - if [ $? == 1 ]; then exit; fi + if [ $? == 1 ]; then exit; fi } function start_mux() { - if [ "$multiconnection" == "yes" ]; then - debug "Starting dummy ssh connection" - ssh -p $destport -i $destid_file $destuser@$desthost sleep 1d & - sleep 1 - fi + if [ "$multiconnection" == "yes" ]; then + debug "Starting dummy ssh connection" + ssh -p $destport -i $destid_file $destuser@$desthost sleep 1d & + sleep 1 + fi } function end_mux() { - if [ "$multiconnection" == "yes" ]; then - debug "Stopping dummy ssh connection" - ssh -p $destport -i $destid_file $destuser@$desthost pkill sleep - fi + if [ "$multiconnection" == "yes" ]; then + debug "Stopping dummy ssh connection" + ssh -p $destport -i $destid_file $destuser@$desthost pkill sleep + fi } ### @@ -312,10 +312,10 @@ function end_mux() { # see if we can login debug "ssh -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file 'echo -n 1'" if [ ! $test ]; then - result=`ssh -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file 'echo -n 1' 2>&1` - if [ "$result" != "1" ]; then - fatal "Can't connect to $desthost as $destuser using $destid_file." - fi + result=`ssh -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file 'echo -n 1' 2>&1` + if [ "$result" != "1" ]; then + fatal "Can't connect to $desthost as $destuser using $destid_file." + fi fi end_mux @@ -324,47 +324,46 @@ start_mux ## SANITY CHECKS ## status=`ssh -p $destport -i $destid_file $destuser@$desthost "[ -d \"$destdir\" ] && echo 'ok'"` if [ "$status" != "ok" ]; then - end_mux - fatal "Destination directory $destdir doesn't exist!" - exit + end_mux + fatal "Destination directory $destdir doesn't exist!" + exit fi ### REMOVE OLD MAILDIRS ### if [ "$remove" == "yes" ]; then - do_remove + do_remove fi ### MAKE BACKUPS ### if [ "$backup" == "yes" ]; then - if [ $keepdaily -gt 0 ]; then btype=daily - elif [ $keepweekly -gt 0 ]; then btype=weekly - elif [ $keepmonthly -gt 0 ]; then btype=monthly - else fatal "keeping no backups"; fi - - if [ "$testuser" != "" ]; then - cd "$srcdir/${user:0:1}" - do_rotate $testuser - setup_remote_dirs $testuser $btype - do_user $testuser $btype - else - [ -d "$srcdir" ] || fatal "directory $srcdir not found." - cd "$srcdir" - for userdir in `ls -d1 */`; do - [ -d "$srcdir/$userdir" ] || fatal "directory $srcdir/$userdir not found." - cd "$srcdir/$userdir" - debug $userdir - for user in `ls -1`; do - [ "$user" != "" ] || continue - debug "$user $userdir" - do_rotate $user $userdir - setup_remote_dirs $user $btype $userdir - do_user $user $btype $userdir - done - done - fi + if [ $keepdaily -gt 0 ]; then btype=daily + elif [ $keepweekly -gt 0 ]; then btype=weekly + elif [ $keepmonthly -gt 0 ]; then btype=monthly + else fatal "keeping no backups"; fi + + if [ "$testuser" != "" ]; then + cd "$srcdir/${user:0:1}" + do_rotate $testuser + setup_remote_dirs $testuser $btype + do_user $testuser $btype + else + [ -d "$srcdir" ] || fatal "directory $srcdir not found." + cd "$srcdir" + for userdir in `ls -d1 */`; do + [ -d "$srcdir/$userdir" ] || fatal "directory $srcdir/$userdir not found." + cd "$srcdir/$userdir" + debug $userdir + for user in `ls -1`; do + [ "$user" != "" ] || continue + debug "$user $userdir" + do_rotate $user $userdir + setup_remote_dirs $user $btype $userdir + do_user $user $btype $userdir + done + done + fi fi end_mux - |