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|
#!/bin/bash
. #ETCDIR#/backup.conf
usage()
{
>&2 echo 'This is backup version #VERSION#'
>&2 echo ''
>&2 echo 'usage:'
>&2 echo ' backup /tmp/pidFile /path/to/destination/ user@source:path'
>&2 echo ' backup /tmp/pidFile /path/to/destination/ user@source:path proxy_user@ssh_host'
>&2 echo 'or as a symlink (e.g. in /etc/cron/daily) named after a key of $backups in #ETCDIR#/backup.conf without arguments'
exit 1
}
if [ $# -eq 0 ]
then
backupID="$(basename $0)"
[ -z "${backups[${backupID}]}" ] && usage
set /tmp/${backupID}.pid ${backups[${backupID}]}
fi
Basis="$2"
pidFile="$1"
QuellIP=$(echo "$3" | sed "s|^[a-zA-Z]*://||; s|^[a-zA-Z]*@||; s|:\?/.*$||")
if [ "$#" -eq 3 ]
then
Quelle="$3"
elif [ "$#" -eq 4 ]
then
sshHopp="$4"
lokPort=$[$RANDOM/2+8000]
rsyncShell="-e ssh -p${lokPort} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
tunnelBefehl="ssh -t -t -L${lokPort}:${QuellIP}:22 ${sshHopp}"
HoppIP="${sshHopp#*@}"
Quelle="$(echo "$3" | sed "s|${QuellIP}|127.0.0.1|")"
else
usage
fi
ping -c1 ${QuellIP} > /dev/null || exit 11
if [ -n "${HoppIP}" ]
then
ping -c1 ${HoppIP} > /dev/null || exit 11
fi
if [ ! -d ${Basis} ]
then
[ $(mount | grep -c "\S\+\s\+\S\+\s\+/var/ftp\s") -eq 0 ] && exit 11
exit 2
fi
neues_Datum=${Basis}/$(date "+%Y_%m_%d")
neues=${Basis}/aktuell
linkdests=""
for s in $(ls -1tr ${Basis} | grep -v aktuell | tail -n20 )
do
linkdests="${linkdests} --link-dest ${Basis}/${s}"
done
if [ ! "$(whoami)" == "root" ]
then
echo "I need to be root."
exit 3
fi
[ -w ${Basis} ] || exit 11
[ -e ${neues_Datum} ] && exit 4
[ -e ${pidFile} ] && exit 5
echo $$ > ${pidFile}
if [ -n "${tunnelBefehl}" ]
then
${tunnelBefehl} &
backgroundPid=$!
sleep 4
fi
for toExclude in "${excludes[@]}"
do
excludeArgs="${excludeArgs} --exclude ${toExclude}"
done
if [ ! -e ${neues} ]
then
mkdir ${neues}
fi
chmod 750 ${neues}
chown erich:root ${neues}
if [ -z "${rsyncShell}" ]
then
rsync -av -x --no-p --no-o --no-g ${linkdests} \
${excludeArgs} \
${Quelle} ${neues}/
sleep 1
rsync ${Quelle}
else
rsync "${rsyncShell}" -av -x --no-p --no-o --no-g ${linkdests} \
${excludeArgs} \
${Quelle} ${neues}/
sleep 1
rsync "${rsyncShell}" ${Quelle}
fi
erg=$?
[ -n "${backgroundPid}" ] && kill ${backgroundPid}
if [ ${erg} -eq 0 ] || [ ${erg} -eq 24 ]
then
mv ${neues} ${neues_Datum}
rm ${pidFile}
else
rm ${pidFile}
exit 11
fi
|
