#!/bin/bash
DEST="<%= @dest %>"
MAILTO="<%= @mailto %>"
BASE="<%= @base %>"
OLD_BAK_BASE=$BASE/older/j
BAK_BASE=${OLD_BAK_BASE}0
RSYNC_OUTPUT=$BASE/rsync_output
NBR=7

TMP=`mktemp`
TMP_STDERR=`mktemp`

trap "rm -f $TMP $TMP_STDERR" EXIT

exec 2> "$TMP_STDERR"

set -e
if ! `ssh -o ClearAllForwardings=yes $DEST backup`; then
  echo "Fichier de verrouillage backup sur $DEST"
  exit 1
fi

rm -rf ${OLD_BAK_BASE}${NBR}
for j in `seq -w $(($NBR-1)) -1 0`; do
  [ ! -d ${OLD_BAK_BASE}$j ] && continue
  mv ${OLD_BAK_BASE}$j ${OLD_BAK_BASE}$(($j+1))
done
mkdir $BAK_BASE
mv $RSYNC_OUTPUT $BAK_BASE
mkdir $RSYNC_OUTPUT

##############
NAME="home"
FOLDER="/home/immae"

cd $BASE/$NAME
cat > $TMP <<EOF
/.no_backup/
/hosts/florian/nobackup/
/hosts/connexionswing.com/
/hosts/connexionswing.immae.eu/
/hosts/ludivine.immae.eu/
/hosts/ludivinecassal.com/
/hosts/piedsjaloux.fr/
/hosts/piedsjaloux.immae.eu/
/hosts/spip/sites/*/
/hosts/spip/spip*
EOF
OUT=$RSYNC_OUTPUT/$NAME
rsync -XAavbrz --fake-super -e ssh --numeric-ids --delete \
  --backup-dir=$BAK_BASE/$NAME --exclude-from=$TMP \
  $DEST:$FOLDER . > $OUT || true

##############
NAME="system"
FOLDER="/"

cd $BASE/$NAME
cat > $TMP <<EOF
/etc/
/srv/
/var/lib/
/var/spool/
/var/named/
/usr/local/
EOF
OUT=$RSYNC_OUTPUT/$NAME
rsync -XAavbrz -R --fake-super -e ssh --numeric-ids --delete \
  --rsync-path='sudo rsync' \
  --backup-dir=$BAK_BASE/$NAME \
  --files-from=$TMP \
  $DEST:$FOLDER . > $OUT || true

##############
ssh $DEST sh -c "date > .last_backup"

if [ -s "$TMP_STDERR" ]; then
  cat "$TMP_STDERR" | mail -Ssendwait -s "save_distant rsync error" "$MAILTO" 
fi