nsd/nsd-incrserial

   1 #!/bin/sh
   2
   3 # Copyright (c) 2013 Stefan Huber <shuber@sthu.org>
   4 #
   5 # Permission is hereby granted, free of charge, to any person
   6 # obtaining a copy of this software and associated documentation
   7 # files (the "Software"), to deal in the Software without
   8 # restriction, including without limitation the rights to use,
   9 # copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 # copies of the Software, and to permit persons to whom the
  11 # Software is furnished to do so, subject to the following
  12 # conditions:
  13 #
  14 # The above copyright notice and this permission notice shall be
  15 # included in all copies or substantial portions of the Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  19 # OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  21 # HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  22 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24 # OTHER DEALINGS IN THE SOFTWARE.
  25
  26 set -e
  27
  28 PROGNAME=$(basename $0)
  29
  30 usage() {
  31     cat <<EOF
  32 Increments serial in zonefile by one.
  33
  34 Usage: $PROGNAME zonefile [OPTIONS]
  35
  36 Options:
  37     -h, --help      Print this text.
  38 EOF
  39 }
  40
  41 TEMP=`getopt -o "h" --long "help" -n "$PROGNAME" -- "$@"`
  42 eval set - "$TEMP"
  43
  44 while true; do
  45     case "$1" in
  46         -h | --help )
  47             usage
  48             exit $STATE_OK ;;
  49         -- )
  50             shift
  51             break ;;
  52         * )
  53             break ;;
  54     esac
  55 done
  56
  57 if [ "$#" = "0" ]; then
  58     echo "Not enough arguments."
  59     usage
  60     exit 1
  61 fi
  62
  63 zonefile=$1
  64 if ! [ -r "${zonefile}" ]; then
  65     echo "Zone file does not exist: '${zonefile}'"
  66     exit 2
  67 fi
  68
  69 getSerialFromZonefile() # <zonefile>
  70 {
  71         awk '/; serial/{print$1}' "$1"
  72 }
  73
  74 setSerialInZonefile() # <zonefile> <serial>
  75 {
  76         sed -i -e "s_^\\(.*\\s\\)[0-9]\+\\(\\s\\+; serial.*\\)_\\1$2\\2_g" "$1"
  77 }
  78
  79
  80 serial=`getSerialFromZonefile "${zonefile}"`
  81 serial=$(( $serial + 1))
  82
  83 if [ -z "$serial" ]; then
  84     echo "Internal error, serial is empty."
  85     exit 1
  86 fi
  87
  88 setSerialInZonefile "${zonefile}" "${serial}"
  89