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bpfire/src/scripts/convert-dns-settings
2023-05-11 20:19:20 +00:00

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#!/bin/bash
###############################################################################
# #
# IPFire.org - A linux based firewall #
# Copyright (C) 2007-2022 IPFire Team <info@ipfire.org> #
# #
# This program 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 3 of the License, or #
# (at your option) any later version. #
# #
# This program 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 program. If not, see <http://www.gnu.org/licenses/>. #
# #
###############################################################################
FILES=(
/var/ipfire/ethernet/settings
/var/ipfire/dns/settings
/var/ipfire/ppp/settings
/var/ipfire/ppp/settings-*
)
main() {
# Do not convert anything if we already have some servers set
if [ ! -s "/var/ipfire/dns/servers" ]; then
# Array to store all found DNS servers.
local SERVERS=()
# Loop through all PPP profiles
local file
for file in "${FILES[@]}"; do
if [ -s "${file}" ]; then
local DNS0 DNS1 DNS2
eval $(/usr/local/bin/readhash "${file}")
# Add the DNS servers to the array of SERVERS
local var
for var in DNS0 DNS1 DNS2; do
SERVERS+=( "${!var}" )
done
fi
done
local server
local i=3
for server in $(printf "%s\n" "${SERVERS[@]}" | sort -u); do
if [ -n "${server}" ]; then
echo "${i},${server},,enabled,"
(( i++ ))
fi
done > /var/ipfire/dns/servers
# Empty the old settings file
: > /var/ipfire/dns/settings
# Enable using ISP name servers when no servers are configured
if [ ${i} -eq 3 ]; then
echo "USE_ISP_NAMESERVERS=on" \
>> /var/ipfire/dns/settings
fi
fi
# Remove all old settings from files
local file
for file in "${FILES[@]}"; do
# Remove DNS, DNS0, DNS1 and DNS2
sed -Ei "/^DNS[012]?=/d" "${file}"
done
# Set correct ownership.
chown nobody:nobody /var/ipfire/dns/settings
# Convert old unbound settings file
if [ -e "/etc/sysconfig/unbound" ]; then
local USE_FORWARDERS
local ENABLE_SAFE_SEARCH
local FORCE_TCP
# Read settings
eval $(/usr/local/bin/readhash /etc/sysconfig/unbound)
# Safe Search
if [ "${ENABLE_SAFE_SEARCH}" = "on" ]; then
echo "ENABLE_SAFE_SEARCH=${ENABLE_SAFE_SEARCH}" \
>> /var/ipfire/dns/settings
fi
# Force TCP
if [ "${FORCE_TCP}" = "on" ]; then
echo "PROTO=TCP" >> /var/ipfire/dns/settings
fi
# Run in recursor mode
if [ "${USE_FORWARDERS}" = "0" ]; then
# Remove all servers
: > /var/ipfire/dns/servers
fi
rm -f "/etc/sysconfig/unbound"
fi
# Set correct ownership.
chown nobody:nobody /var/ipfire/dns/servers
# Make DHCP leases readable for nobody
chmod 644 /etc/unbound/dhcp-leases.conf
}
main "$@" || exit $?