Tobias Knöppler f58852ea27
dnsmasq.sh: Fix dns resolv workaround for hosts using resolvconf instead of systemd-resolved
Signed-off-by: Tobias Knöppler <6317548+theCalcaholic@users.noreply.github.com>
Signed-off-by: Tobias K <6317548+theCalcaholic@users.noreply.github.com>
2024-05-01 15:46:58 +02:00

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#!/bin/bash
# dnsmasq DNS server with cache installation on Raspbian
#
# Copyleft 2017 by Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com>
# GPL licensed (see end of file) * Use at your own risk!
#
# More at: https://ownyourbits.com/2017/03/09/dnsmasq-as-dns-cache-server-for-nextcloudpi-and-raspbian/
#
install()
{
set -x
apt-get update
apt-get install --no-install-recommends -y dnsmasq
rc=0
service dnsmasq status > /dev/null 2>&1 || rc=$?
[[ $rc -eq 3 ]] && ! [[ "$INIT_SYSTEM" =~ ^("chroot"|"unknown")$ ]] && command -v systemd-resolve > /dev/null || {
echo "Applying workaround for dnsmasq bug (compare issue #1446)"
mkdir -p /etc/systemd/resolved.conf.d
if systemctl status systemd-resolved
then
cat <<EOF > /etc/systemd/resolved.conf.d/nostublistener.conf
[Resolve]
DNSStubListener=no
EOF
[[ "$INIT_SYSTEM" != "systemd" ]] || systemctl restart systemd-resolved
else
systemctl stop resolvconf
systemctl start dnsmasq
systemctl status dnsmasq
fi
# service systemd-resolved stop || true
systemctl start dnsmasq
systemctl status dnsmasq
}
service dnsmasq stop
[[ "$INIT_SYSTEM" != "systemd" ]] || systemctl start systemd-resolved || systemctl start resolvconf
update-rc.d dnsmasq disable || rm /etc/systemd/system/multi-user.target.wants/dnsmasq.service
return 0
}
configure()
{
[[ $ACTIVE != "yes" ]] && {
service dnsmasq stop
update-rc.d dnsmasq disable
echo "dnmasq disabled"
return
}
local IFACE IP
IFACE=$( ip r | grep "default via" | awk '{ print $5 }' | head -1 )
IP=$( ncc config:system:get trusted_domains 6 | grep -oP '\d{1,3}(.\d{1,3}){3}' )
[[ "$IP" == "" ]] && IP="$(get_ip)"
[[ "$IP" == "" ]] && { echo "could not detect IP"; return 1; }
cat > /etc/dnsmasq.conf <<EOF
interface=$IFACE
domain-needed # Never forward plain names (without a dot or domain part)
bogus-priv # Never forward addresses in the non-routed address spaces.
no-poll # Don't poll for changes in /etc/resolv.conf
no-resolv # Don't use /etc/resolv.conf or any other file
cache-size=$CACHESIZE
server=$DNSSERVER
address=/$DOMAIN/$IP # This is optional if we add it to /etc/hosts
EOF
# required to run in container
test -d /data && echo "user=root" >> /etc/dnsmasq.conf
sed -i 's|#\?IGNORE_RESOLVCONF=.*|IGNORE_RESOLVCONF=yes|' /etc/default/dnsmasq
update-rc.d dnsmasq defaults
update-rc.d dnsmasq enable
service dnsmasq restart
ncc config:system:set trusted_domains 2 --value="$DOMAIN"
set-nc-domain "$DOMAIN" --no-trusted-domain
echo "dnsmasq enabled"
}
# License
#
# This script is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this script; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA