named.in revision 282746 
1#!/bin/sh
2# Copyright (c) 2007-2012 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 "$RESOLVCONF" ] && eval "$(@SBINDIR@/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	elif [ -x "@RCDIR@"/rc.bind ]; then
44		# Slackware
45		named_service=rc.bind
46	fi
47fi
48: ${named_service:=named}
49: ${named_restart:=@RESTARTCMD ${named_service}@}
50newoptions="# Generated by resolvconf$NL"
51newzones="$newoptions"
52
53forward=
54for n in $NAMESERVERS; do
55	case "$forward" in
56	*"$NL	$n;"*);;
57	*) forward="$forward$NL	$n;";;
58	esac
59done
60if [ -n "$forward" ]; then
61	newoptions="${newoptions}forward first;${NL}forwarders {$forward${NL}};$NL"
62fi
63
64for d in $DOMAINS; do
65	newzones="${newzones}zone \"${d%%:*}\" {$NL"
66	newzones="$newzones	type forward;$NL"
67	newzones="$newzones	forward first;$NL	forwarders {$NL"
68	ns="${d#*:}"
69	while [ -n "$ns" ]; do
70		newzones="$newzones		${ns%%,*};$NL"
71		[ "$ns" = "${ns#*,}" ] && break
72		ns="${ns#*,}"
73	done
74	newzones="$newzones	};$NL};$NL"
75done
76
77# Try to ensure that config dirs exist
78if type config_mkdirs >/dev/null 2>&1; then
79	config_mkdirs "$named_options" "$named_zones"
80else
81	@SBINDIR@/resolvconf -D "$named_options" "$named_zones"
82fi
83
84# No point in changing files or reloading bind if the end result has not
85# changed
86changed=false
87if [ -n "$named_options" ]; then
88	if [ ! -f "$named_options" ] || \
89		[ "$(cat "$named_options")" != "$(printf %s "$newoptions")" ]
90	then
91		printf %s "$newoptions" >"$named_options"
92		changed=true
93	fi
94fi
95if [ -n "$named_zones" ]; then
96	if [ ! -f "$named_zones" ] || \
97		[ "$(cat "$named_zones")" != "$(printf %s "$newzones")" ]
98	then
99		printf %s "$newzones" >"$named_zones"
100		changed=true
101	fi
102fi
103
104if $changed; then
105	eval $named_restart
106fi
107