Downloads configurable directories from uberspace users (and also other SSH-accessible server) and encrypts them with GnuPG. Can automatically delete older backups.
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#!/bin/bash
CURDIR=$(dirname "$(readlink -f "$0")")
if [ ! -e "$CURDIR"/config.cfg ]; then echo "Missing config.cfg file. Edit and rename config.cfg.sample"; exit 1; fi
source "$CURDIR"/config.cfg
if [ ! -e "$HOSTS" ]; then echo "Missing hosts file. Please set a correct value of HOSTS= in your config file. Current value: $HOSTS"; exit 1; fi
# Get current date
DATE=$(date +"%Y-%m-%d_%H-%M")
LOG="$CURDIR"/backup.log
function trim {
sed -r -e 's/^\s*//g' -e 's/\s*$//g'
}
function pdate {
DATE=$(date +%y-%m-%d_%H:%M:%S)
echo "[$DATE]"
}
function logecho {
# Echo string and copy it to log while attaching the current date
echo "$(pdate) $@"
echo "$(pdate) $@" >> "$LOG"
}
while read line; do
if $(echo "$line" | grep -qE "^\s*#"); then continue; fi
RHOST=$(echo "$line" | cut -d";" -f1 | trim)
RUSER=$(echo "$RHOST" | cut -d"@" -f1)
ALLRDIR=$(echo "$line" | cut -d";" -f2 | trim)
logecho "Starting backup of ${RHOST}"
NORDIR=$(echo $ALLRDIR | grep -o "|" | wc -l)
NORDIR=$[$NORDIR + 1]
for ((i = 1; i <= $NORDIR; i++)); do
RDIR=$(echo "$ALLRDIR" | cut -d"|" -f${i} | trim)
if [ "${RDIR}" == "%virtual" ]; then
RDIR=/var/www/virtual/${RUSER}
DEST="$BACKUPDIR/$RHOST/$DATE/virtual"
elif [ "${RDIR}" == "%mysql" ]; then
RDIR=mysql
DEST="$BACKUPDIR/$RHOST/$DATE/$(basename "${RDIR}")"
elif [ "${RDIR}" == "%mails" ]; then
RDIR=/home/${RUSER}/users
DEST="$BACKUPDIR/$RHOST/$DATE/mails"
else
DEST="$BACKUPDIR/$RHOST/$DATE/$(basename "${RDIR}")"
fi
# Set Source directory, and make exception for %mysql
SOURCE="${RDIR}"
if [ "${RDIR}" == "mysql" ]; then SOURCE=/mysqlbackup/latest/${RUSER}; fi
# Create backup destination if necessary
if [ ! -e "${DEST}" ]; then mkdir -p "${DEST}"; fi
logecho "${RHOST}: Downloading ${SOURCE} to ${DEST}"
# RSYNC
rsync -az -e "ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null" ${RHOST}:${SOURCE}/ "${DEST}"/
# Pack backup directory, and delete uncompressed one
tar cf ${DEST}.tar -C $(echo ${DEST} | sed "s|$(basename ${DEST})$||") $(basename ${DEST}) # TODO: avoid absolute paths
rm -rf ${DEST}
# Encrypt archive with GPG (it compresses at the same time)
gpg --output ${DEST}.tar.gpg --encrypt --recipient ${GPG} ${DEST}.tar
rm ${DEST}.tar
# Delete all old directories except the $MAXBAK most recent
if [ $(ls -tp "${BACKUPDIR}"/"${RHOST}"/ | grep '/$' | wc -l) -gt $MAXBAK ]; then
ls -tpd "${BACKUPDIR}"/"${RHOST}"/* | grep '/$' | tail -n +$[$MAXBAK + 1] | xargs -d '\n' rm -r --
fi
done
done < "$HOSTS"