1 files changed, 115 insertions, 0 deletions
diff --git a/backup b/backup
new file mode 100755
index 0000000..f6501dc
--- /dev/null
+++ b/backup
@@ -0,0 +1,115 @@
+#!/bin/bash
+
+. /etc/backup.conf
+
+usage()
+{
+  echo 'usage:'
+  echo ' backup /tmp/pidFile /path/to/destination/ user@source:path'
+  echo ' backup /tmp/pidFile /path/to/destination/ user@source:path proxy_user@ssh_host'
+  echo 'or as a symlink (e.g. in /etc/cron/daily) named after a key of $backups in /etc/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