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 NL="
  34 "
  35
  36 : ${unbound_pid:=/var/run/unbound.pid}
  37 : ${unbound_service:=unbound}
  38 : ${unbound_restart:=@RESTARTCMD ${unbound_service}@}
  39 newconf="# Generated by resolvconf$NL"
  40
  41 for d in $DOMAINS; do
  42         dn="${d%%:*}"
  43         ns="${d#*:}"
  44         newconf="$newconf${NL}forward-zone:$NL  name: \"$dn\"$NL"
  45         while [ -n "$ns" ]; do
  46                 newconf="$newconf       forward-addr: ${ns%%,*}$NL"
  47                 [ "$ns" = "${ns#*,}" ] && break
  48                 ns="${ns#*,}"
  49         done
  50 done
  51
  52 if [ -n "$NAMESERVERS" ]; then
  53         newconf="$newconf${NL}forward-zone:$NL  name: \".\"$NL"
  54         for n in $NAMESERVERS; do
  55                 newconf="$newconf       forward-addr: $n$NL"
  56         done
  57 fi
  58
  59 if [ ! -f "$unbound_conf" ] || \
  60         [ "$(cat "$unbound_conf")" != "$(printf %s "$newconf")" ]
  61 then
  62         printf %s "$newconf" >"$unbound_conf"
  63         # If we can't sent a HUP then force a restart
  64         if [ -s "$unbound_pid" ]; then
  65                 if ! kill -HUP $(cat "$unbound_pid") 2>/dev/null; then
  66                         eval $unbound_restart
  67                 fi
  68         else
  69                 eval $unbound_restart
  70         fi
  71 fi