# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
# vim: set filetype=sh sw=3 sts=3 expandtab autoindent:
#
# tar handler script for backupninja

getconf backupname      `hostname --fqdn`
getconf backupdir       /var/backups/`hostname --fqdn`
getconf compress        bzip
getconf includes        "/etc /home /usr/local"
getconf excludes        "/tmp /proc /dev /sys /net /misc /media /srv /selinux"

getconf TAR             `which tar`
getconf EXTENSION       tar
getconf DATE            `which date`
getconf DATEFORMAT      "%Y.%m.%d-%H%M"

if [ ! -d "$backupdir" ]
then
   mkdir -p "$backupdir" || fatal "Can not make directory $backupdir"
fi

if [ ! -w "$backupdir" ]
then
   fatal "Directory $backupdir is not writable"
fi

## DO IT #################################################
#
# here we grab a list of the packages installed and removed.
#

case $compress in
   "compress")
      compress_option="-Z"
      EXTENSION="tar.compress"
      ;;
   "gzip")
      compress_option="-z"
      EXTENSION="tgz"
      ;;
   "bzip")
      compress_option="-j"
      EXTENSION="tar.bz2"
      ;;
   "xz")
      compress_option="-J"
      EXTENSION="tar.xz"
      ;;
   "zstd")
      compress_option="--zstd"
      EXTENSION="tar.zst"
      ;;
   "none")
      compress_option=""
      ;;
   *)
      warning "Unknown compress filter ($compress), defaulting to gzip"
      compress_option="-z"
      EXTENSION="tgz"
      ;;
esac

exclude_options=""
for i in $excludes
do
   exclude_options="$exclude_options --exclude $i"
done

debug "Running backup: " $TAR -c -p -v $compress_option $exclude_options \
   -f "$backupdir/$backupname-"`$DATE "+$DATEFORMAT"`".$EXTENSION" \
   $includes

if [ ! $test ]; then
$TAR -c -p -v $compress_option $exclude_options \
   -f "$backupdir/$backupname-"`$DATE "+$DATEFORMAT"`".$EXTENSION" \
   $includes \
   > "$backupdir/$backupname-"`$DATE "+$DATEFORMAT"`.list \
   2> "$backupdir/$backupname-"`$DATE "+$DATEFORMAT"`.err
fi

[ $? -ne 0 ] && fatal "Tar backup failed"