1#!/bin/sh
2# Copyright (c) 2009-2023 Roy Marples
3# All rights reserved
4
5# PowerDNS Recursor 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 "$pdns_zones" ] && exit 0
32[ -z "$RESOLVCONF" ] && eval "$(@SBINDIR@/resolvconf -v)"
33NL="
34"
35
36: ${pdns_service:=pdns-recursor}
37
38newzones=
39
40for n in $NAMESERVERS; do
41	newzones="$newzones${newzones:+,}$n"
42done
43[ -n "$newzones" ] && newzones="+.=$newzones$NL"
44
45for d in $DOMAINS; do
46	newns=
47	ns="${d#*:}"
48	while [ -n "$ns" ]; do
49		newns="$newns${newns:+,}${ns%%,*}"
50		[ "$ns" = "${ns#*,}" ] && break
51		ns="${ns#*,}"
52	done
53	[ -n "$newns" ] && newzones="$newzones${d%%:*}=$newns$NL"
54done
55
56# Try to ensure that config dirs exist
57if command -v config_mkdirs >/dev/null 2>&1; then
58	config_mkdirs "$pdnsd_zones"
59else
60	@SBINDIR@/resolvconf -D "$pdnsd_zones"
61fi
62
63if [ ! -f "$pdns_zones" ] || \
64	[ "$(cat "$pdns_zones")" != "$(printf %s "$newzones")" ]
65then
66	printf %s "$newzones" >"$pdns_zones"
67	if [ -n "$pdns_restart" ]; then
68		eval $pdns_restart
69	elif [ -n "$RESTARTCMD" ]; then
70		set -- ${pdns_service}
71		eval "$RESTARTCMD"
72	else
73		@SBINDIR@/resolvconf -r ${pdns_service}
74	fi
75fi
76