named.in revision 1.1.1.2 
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: ${named_restart:=@RESTARTCMD named@}
35newoptions="# Generated by resolvconf\n"
36newzones="$newoptions"
37
38forward=
39for n in $NAMESERVERS; do
40	case "$forward" in
41	*"\n\t$n;"*);;
42	*) forward="$forward\n\t$n;";;
43	esac
44done
45if [ -n "$forward" ]; then
46	newoptions="${newoptions}forward first;\nforwarders {$forward\n};\n"
47fi
48
49for 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="$newzones\t};\n};\n"
60done
61
62# No point in changing files or reloading bind if the end result has not
63# changed
64changed=false
65if [ -n "$named_options" ]; then
66	if [ ! -f "$named_options" ] || \
67		[ "$(cat "$named_options")" != "$(printf "$newoptions")" ]
68	then
69		printf "$newoptions" >"$named_options"
70		changed=true
71	fi
72fi
73if [ -n "$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
80fi
81
82if $changed; then
83	eval $named_restart
84fi
85