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