contrib/openresolv/unbound.in

   1 #!/bin/sh
   2 # Copyright (c) 2009 Roy Marples
   3 # All rights reserved
   4
   5 # unbound 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 "$unbound_conf" ] && exit 0
  32 [ -z "$RESOLVCONF" ] && eval "$(@PREFIX@/sbin/resolvconf -v)"
  33
  34 : ${unbound_pid:=/var/run/unbound.pid}
  35 : ${unbound_service:=unbound}
  36 : ${unbound_restart:=@RESTARTCMD ${unbound_service}@}
  37 newconf="# Generated by resolvconf\n"
  38
  39 for d in $DOMAINS; do
  40         dn="${d%%:*}"
  41         ns="${d#*:}"
  42         newconf="${newconf}\nforward-zone:\n\tname: \"$dn\"\n"
  43         while [ -n "$ns" ]; do
  44                 newconf="${newconf}\tforward-addr: ${ns%%,*}\n"
  45                 [ "$ns" = "${ns#*,}" ] && break
  46                 ns="${ns#*,}"
  47         done
  48 done
  49
  50 if [ -n "$NAMESERVERS" ]; then
  51         newconf="${newconf}\nforward-zone:\n\tname: \".\"\n"
  52         for n in $NAMESERVERS; do
  53                 newconf="${newconf}\tforward-addr: $n\n"
  54         done
  55 fi
  56
  57 if [ ! -f "$unbound_conf" ] || \
  58         [ "$(cat "$unbound_conf")" != "$(printf "$newconf")" ]
  59 then
  60         printf "$newconf" >"$unbound_conf"
  61         # If we can't sent a HUP then force a restart
  62         if [ -s "$unbound_pid" ]; then
  63                 if ! kill -HUP $(cat "$unbound_pid") 2>/dev/null; then
  64                         eval $unbound_restart
  65                 fi
  66         else
  67                 eval $unbound_restart
  68         fi
  69 fi