external/bsd/openresolv/dist/named.in

   1 #!/bin/sh
   2 # Copyright (c) 2007-2009 Roy Marples <roy@marples.name>
   3 # All rights reserved
   4
   5 # named subscriber for resolvconf
   6
   7 # Redistribution and use in source and binary forms, with or without
   8 # modification, are permitted provided that the following conditions
   9 # are met:
  10 #     * Redistributions of source code must retain the above copyright
  11 #       notice, this list of conditions and the following disclaimer.
  12 #     * Redistributions in binary form must reproduce the above
  13 #       copyright notice, this list of conditions and the following
  14 #       disclaimer in the documentation and/or other materials provided
  15 #       with the distribution.
  16 #
  17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28
  29 [ -f "@SYSCONFDIR@"/resolvconf.conf ] || exit 0
  30 . "@SYSCONFDIR@/resolvconf.conf" || exit 1
  31 [ -z "$named_zones" -a -z "$named_options" ] && exit 0
  32 [ -z "$RESOLVCONF" ] && eval "$(@PREFIX@/sbin/resolvconf -v)"
  33
  34 : ${named_restart:=@RESTARTCMD named@}
  35 newoptions="# Generated by resolvconf\n"
  36 newzones="$newoptions"
  37
  38 forward=
  39 for n in $NAMESERVERS; do
  40         case "$forward" in
  41         *"\n\t$n;"*);;
  42         *) forward="$forward\n\t$n;";;
  43         esac
  44 done
  45 if [ -n "$forward" ]; then
  46         newoptions="${newoptions}forward first;\nforwarders {$forward\n};\n"
  47 fi
  48
  49 for d in $DOMAINS; do
  50         newzones="${newzones}zone \"${d%%:*}\" {\n"
  51         newzones="$newzones\ttype forward;\n"
  52         newzones="$newzones\tforward first;\n\tforwarders {\n"
  53         ns="${d#*:}"
  54         while [ -n "$ns" ]; do
  55                 newzones="$newzones\t\t${ns%%,*};\n"
  56                 [ "$ns" = "${ns#*,}" ] && break
  57                 ns="${ns#*,}"
  58         done
  59         newzones="$newzones\t};\n};\n"
  60 done
  61
  62 # No point in changing files or reloading bind if the end result has not
  63 # changed
  64 changed=false
  65 if [ -n "$named_options" ]; then
  66         if [ ! -f "$named_options" ] || \
  67                 [ "$(cat "$named_options")" != "$(printf "$newoptions")" ]
  68         then
  69                 printf "$newoptions" >"$named_options"
  70                 changed=true
  71         fi
  72 fi
  73 if [ -n "$named_zones" ]; then
  74         if [ ! -f "$named_zones" ] || \
  75                 [ "$(cat "$named_zones")" != "$(printf "$newzones")" ]
  76         then
  77                 printf "$newzones" >"$named_zones"
  78                 changed=true
  79         fi
  80 fi
  81
  82 if $changed; then
  83         eval $named_restart
  84 fi