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