1#!/bin/sh 2# Copyright (c) 2007-2009 Roy Marples 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)" 33NL=" 34" 35 36# Platform specific kludges 37if [ -z "$named_service" -a -z "$named_restart" -a \ 38 -d "@RCDIR@" -a ! -x "@RCDIR@"/named ] 39then 40 if [ -x "@RCDIR@"/bind9 ]; then 41 # Debian and derivatives 42 named_service=bind9 43 fi 44fi 45: ${named_service:=named} 46: ${named_restart:=@RESTARTCMD ${named_service}@} 47newoptions="# Generated by resolvconf$NL" 48newzones="$newoptions" 49 50forward= 51for n in $NAMESERVERS; do 52 case "$forward" in 53 *"$NL $n;"*);; 54 *) forward="$forward$NL $n;";; 55 esac 56done 57if [ -n "$forward" ]; then 58 newoptions="${newoptions}forward first;${NL}forwarders {$forward${NL}};$NL" 59fi 60 61for d in $DOMAINS; do 62 newzones="${newzones}zone \"${d%%:*}\" {$NL" 63 newzones="$newzones type forward;$NL" 64 newzones="$newzones forward first;$NL forwarders {$NL" 65 ns="${d#*:}" 66 while [ -n "$ns" ]; do 67 newzones="$newzones ${ns%%,*};$NL" 68 [ "$ns" = "${ns#*,}" ] && break 69 ns="${ns#*,}" 70 done 71 newzones="$newzones };$NL};$NL" 72done 73 74# No point in changing files or reloading bind if the end result has not 75# changed 76changed=false 77if [ -n "$named_options" ]; then 78 if [ ! -f "$named_options" ] || \ 79 [ "$(cat "$named_options")" != "$(printf %s "$newoptions")" ] 80 then 81 printf %s "$newoptions" >"$named_options" 82 changed=true 83 fi 84fi 85if [ -n "$named_zones" ]; then 86 if [ ! -f "$named_zones" ] || \ 87 [ "$(cat "$named_zones")" != "$(printf %s "$newzones")" ] 88 then 89 printf %s "$newzones" >"$named_zones" 90 changed=true 91 fi 92fi 93 94if $changed; then 95 eval $named_restart 96fi 97