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864 lines
22 KiB
864 lines
22 KiB
#!/bin/sh
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##############################################################################
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# Copyright (C) 2016 Eric Luehrsen
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#
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##############################################################################
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#
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# This builds the basic UCI components currently supported for Unbound. It is
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# intentionally NOT comprehensive and bundles a lot of options. The UCI is to
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# be a simpler presentation of the total Unbound conf set.
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#
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##############################################################################
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UNBOUND_B_CONTROL=0
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UNBOUND_B_SLAAC6_MAC=0
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UNBOUND_B_DNSSEC=0
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UNBOUND_B_DNS64=0
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UNBOUND_B_GATE_NAME=0
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UNBOUND_B_HIDE_BIND=1
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UNBOUND_B_LOCL_BLCK=0
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UNBOUND_B_LOCL_SERV=1
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UNBOUND_B_MAN_CONF=0
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UNBOUND_B_NTP_BOOT=1
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UNBOUND_B_PRIV_BLCK=1
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UNBOUND_B_QUERY_MIN=0
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UNBOUND_B_QRY_MINST=0
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UNBOUND_D_DOMAIN_TYPE=static
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UNBOUND_D_DHCP_LINK=none
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UNBOUND_D_LAN_FQDN=0
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UNBOUND_D_PROTOCOL=mixed
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UNBOUND_D_RESOURCE=small
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UNBOUND_D_RECURSION=passive
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UNBOUND_D_WAN_FQDN=0
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UNBOUND_IP_DNS64="64:ff9b::/96"
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UNBOUND_N_EDNS_SIZE=1280
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UNBOUND_N_FWD_PORTS=""
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UNBOUND_N_RX_PORT=53
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UNBOUND_N_ROOT_AGE=28
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UNBOUND_TTL_MIN=120
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UNBOUND_TXT_DOMAIN=lan
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UNBOUND_TXT_FWD_ZONE=""
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UNBOUND_TXT_HOSTNAME=thisrouter
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##############################################################################
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UNBOUND_LIBDIR=/usr/lib/unbound
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UNBOUND_VARDIR=/var/lib/unbound
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UNBOUND_PIDFILE=/var/run/unbound.pid
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UNBOUND_SRV_CONF=$UNBOUND_VARDIR/unbound_srv.conf
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UNBOUND_EXT_CONF=$UNBOUND_VARDIR/unbound_ext.conf
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UNBOUND_CONFFILE=$UNBOUND_VARDIR/unbound.conf
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UNBOUND_KEYFILE=$UNBOUND_VARDIR/root.key
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UNBOUND_HINTFILE=$UNBOUND_VARDIR/root.hints
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UNBOUND_TIMEFILE=$UNBOUND_VARDIR/unbound.time
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##############################################################################
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UNBOUND_ANCHOR=/usr/sbin/unbound-anchor
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UNBOUND_CONTROL=/usr/sbin/unbound-control
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UNBOUND_CONTROL_CFG="$UNBOUND_CONTROL -c $UNBOUND_CONFFILE"
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##############################################################################
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. /lib/functions.sh
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. /lib/functions/network.sh
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. $UNBOUND_LIBDIR/dnsmasq.sh
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. $UNBOUND_LIBDIR/iptools.sh
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. $UNBOUND_LIBDIR/rootzone.sh
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##############################################################################
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create_interface_dns() {
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local cfg="$1"
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local ipcommand logint ignore ifname ifdashname
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local name names address addresses
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local ulaprefix if_fqdn host_fqdn mode mode_ptr
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# Create local-data: references for this hosts interfaces (router).
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config_get logint "$cfg" interface
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config_get_bool ignore "$cfg" ignore 0
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network_get_device ifname "$cfg"
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ifdashname="${ifname//./-}"
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ipcommand="ip -o address show $ifname"
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addresses="$($ipcommand | awk '/inet/{sub(/\/.*/,"",$4); print $4}')"
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ulaprefix="$(uci_get network @globals[0] ula_prefix)"
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host_fqdn="$UNBOUND_TXT_HOSTNAME.$UNBOUND_TXT_DOMAIN"
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if_fqdn="$ifdashname.$host_fqdn"
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if [ "$ignore" -gt 0 ] ; then
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mode="$UNBOUND_D_WAN_FQDN"
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else
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mode="$UNBOUND_D_LAN_FQDN"
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fi
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case "$mode" in
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3)
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mode_ptr="$host_fqdn"
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names="$host_fqdn $UNBOUND_TXT_HOSTNAME"
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;;
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4)
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mode_ptr="$if_fqdn"
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names="$if_fqdn $host_fqdn $UNBOUND_TXT_HOSTNAME"
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;;
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*)
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mode_ptr="$UNBOUND_TXT_HOSTNAME"
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names="$UNBOUND_TXT_HOSTNAME"
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;;
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esac
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if [ "$mode" -gt 1 ] ; then
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{
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for address in $addresses ; do
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case $address in
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fe80:*|169.254.*)
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echo " # note link address $address"
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;;
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[1-9a-f]*:*[0-9a-f])
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# GA and ULA IP6 for HOST IN AAA records (ip command is robust)
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for name in $names ; do
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echo " local-data: \"$name. 120 IN AAAA $address\""
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done
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echo " local-data-ptr: \"$address 120 $mode_ptr\""
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;;
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[1-9]*.*[0-9])
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# Old fashioned HOST IN A records
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for name in $names ; do
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echo " local-data: \"$name. 120 IN A $address\""
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done
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echo " local-data-ptr: \"$address 120 $mode_ptr\""
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;;
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esac
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done
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echo
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} >> $UNBOUND_CONFFILE
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elif [ "$mode" -gt 0 ] ; then
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{
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for address in $addresses ; do
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case $address in
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fe80:*|169.254.*)
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echo " # note link address $address"
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;;
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"${ulaprefix%%:/*}"*)
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# Only this networks ULA and only hostname
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echo " local-data: \"$UNBOUND_TXT_HOSTNAME. 120 IN AAAA $address\""
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echo " local-data-ptr: \"$address 120 $UNBOUND_TXT_HOSTNAME\""
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;;
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[1-9]*.*[0-9])
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echo " local-data: \"$UNBOUND_TXT_HOSTNAME. 120 IN A $address\""
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echo " local-data-ptr: \"$address 120 $UNBOUND_TXT_HOSTNAME\""
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;;
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esac
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done
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echo
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} >> $UNBOUND_CONFFILE
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fi
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}
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##############################################################################
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create_access_control() {
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local cfg="$1"
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local subnets subnets4 subnets6
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local validip4 validip6
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network_get_subnets subnets4 "$cfg"
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network_get_subnets6 subnets6 "$cfg"
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subnets="$subnets4 $subnets6"
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if [ -n "$subnets" ] ; then
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for subnet in $subnets ; do
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validip4=$( valid_subnet4 $subnet )
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validip6=$( valid_subnet6 $subnet )
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if [ "$validip4" = "ok" -o "$validip6" = "ok" ] ; then
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# For each "network" UCI add "access-control:" white list for queries
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echo " access-control: $subnet allow" >> $UNBOUND_CONFFILE
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fi
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done
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fi
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}
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##############################################################################
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create_domain_insecure() {
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echo " domain-insecure: \"$1\"" >> $UNBOUND_CONFFILE
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}
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##############################################################################
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unbound_mkdir() {
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local resolvsym=0
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local dhcp_origin=$( uci get dhcp.@odhcpd[0].leasefile )
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local dhcp_dir=$( dirname "$dhcp_origin" )
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if [ ! -x /usr/sbin/dnsmasq -o ! -x /etc/init.d/dnsmasq ] ; then
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resolvsym=1
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else
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/etc/init.d/dnsmasq enabled || resolvsym=1
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fi
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if [ "$resolvsym" -gt 0 ] ; then
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rm -f /tmp/resolv.conf
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{
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# Set resolver file to local but not if /etc/init.d/dnsmasq will do it.
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echo "nameserver 127.0.0.1"
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echo "nameserver ::1"
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echo "search $UNBOUND_TXT_DOMAIN"
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} > /tmp/resolv.conf
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fi
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if [ "$UNBOUND_D_DHCP_LINK" = "odhcpd" -a ! -d "$dhcp_dir" ] ; then
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# make sure odhcpd has a directory to write (not done itself, yet)
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mkdir -p "$dhcp_dir"
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fi
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mkdir -p $UNBOUND_VARDIR
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rm -f $UNBOUND_VARDIR/dhcp_*
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touch $UNBOUND_CONFFILE
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touch $UNBOUND_SRV_CONF
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touch $UNBOUND_EXT_CONF
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cp -p /etc/unbound/* $UNBOUND_VARDIR/
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if [ ! -f $UNBOUND_HINTFILE ] ; then
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if [ -f /usr/share/dns/root.hints ] ; then
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# Debian-like package dns-root-data
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cp -p /usr/share/dns/root.hints $UNBOUND_HINTFILE
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else
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logger -t unbound -s "iterator will use built-in root hints"
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fi
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fi
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if [ ! -f $UNBOUND_KEYFILE ] ; then
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if [ -f /usr/share/dns/root.key ] ; then
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# Debian-like package dns-root-data
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cp -p /usr/share/dns/root.key $UNBOUND_KEYFILE
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elif [ -x "$UNBOUND_ANCHOR" ] ; then
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$UNBOUND_ANCHOR -a $UNBOUND_KEYFILE
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else
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logger -t unbound -s "validator will use built-in trust anchor"
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fi
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fi
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# Ensure access and prepare to jail
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chown -R unbound:unbound $UNBOUND_VARDIR
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chmod 775 $UNBOUND_VARDIR
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chmod 664 $UNBOUND_VARDIR/*
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}
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##############################################################################
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unbound_control() {
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if [ "$UNBOUND_B_CONTROL" -gt 0 ] ; then
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{
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# Enable remote control tool, but only at local host for security
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# You can hand write fancier encrypted access with /etc/..._ext.conf
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echo "remote-control:"
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echo " control-enable: yes"
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echo " control-use-cert: no"
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echo " control-interface: 127.0.0.1"
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echo " control-interface: ::1"
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echo
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} >> $UNBOUND_CONFFILE
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fi
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{
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# Amend your own extended clauses here like forward zones or disable
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# above (local, no encryption) and amend your own remote encrypted control
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echo
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echo "include: $UNBOUND_EXT_CONF" >> $UNBOUND_CONFFILE
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echo
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} >> $UNBOUND_CONFFILE
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}
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##############################################################################
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unbound_conf() {
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local cfg="$1"
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local rt_mem rt_conn modulestring
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{
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# Make fresh conf file
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echo "# $UNBOUND_CONFFILE generated by UCI $( date )"
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echo
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} > $UNBOUND_CONFFILE
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{
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# No threading
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echo "server:"
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echo " username: unbound"
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echo " num-threads: 1"
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echo " msg-cache-slabs: 1"
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echo " rrset-cache-slabs: 1"
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echo " infra-cache-slabs: 1"
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echo " key-cache-slabs: 1"
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echo
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} >> $UNBOUND_CONFFILE
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{
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# Logging
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echo " verbosity: 1"
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echo " statistics-interval: 0"
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echo " statistics-cumulative: no"
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echo " extended-statistics: no"
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echo
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} >> $UNBOUND_CONFFILE
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{
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# Interfaces (access contol "option local_service")
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echo " interface: 0.0.0.0"
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echo " interface: ::0"
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echo " outgoing-interface: 0.0.0.0"
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echo " outgoing-interface: ::0"
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echo
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} >> $UNBOUND_CONFFILE
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case "$UNBOUND_D_PROTOCOL" in
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ip4_only)
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{
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echo " do-ip4: yes"
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echo " do-ip6: no"
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} >> $UNBOUND_CONFFILE
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;;
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ip6_only)
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{
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echo " do-ip4: no"
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echo " do-ip6: yes"
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} >> $UNBOUND_CONFFILE
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;;
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ip6_prefer)
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{
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echo " do-ip4: yes"
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echo " do-ip6: yes"
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echo " prefer-ip6: yes"
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} >> $UNBOUND_CONFFILE
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;;
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*)
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{
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echo " do-ip4: yes"
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echo " do-ip6: yes"
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} >> $UNBOUND_CONFFILE
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;;
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esac
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{
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# protocol level tuning
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echo " edns-buffer-size: $UNBOUND_N_EDNS_SIZE"
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echo " msg-buffer-size: 8192"
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echo " port: $UNBOUND_N_RX_PORT"
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echo " outgoing-port-permit: 10240-65535"
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echo
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} >> $UNBOUND_CONFFILE
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{
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# Other harding and options for an embedded router
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echo " harden-short-bufsize: yes"
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echo " harden-large-queries: yes"
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echo " harden-glue: yes"
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echo " harden-below-nxdomain: no"
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echo " harden-referral-path: no"
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echo " use-caps-for-id: no"
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echo
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} >> $UNBOUND_CONFFILE
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{
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# Default Files
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echo " use-syslog: yes"
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echo " chroot: \"$UNBOUND_VARDIR\""
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echo " directory: \"$UNBOUND_VARDIR\""
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echo " pidfile: \"$UNBOUND_PIDFILE\""
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} >> $UNBOUND_CONFFILE
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if [ -f "$UNBOUND_HINTFILE" ] ; then
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# Optional hints if found
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echo " root-hints: \"$UNBOUND_HINTFILE\"" >> $UNBOUND_CONFFILE
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fi
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if [ "$UNBOUND_B_DNSSEC" -gt 0 -a -f "$UNBOUND_KEYFILE" ] ; then
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{
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echo " auto-trust-anchor-file: \"$UNBOUND_KEYFILE\""
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echo
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} >> $UNBOUND_CONFFILE
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else
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echo >> $UNBOUND_CONFFILE
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fi
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case "$UNBOUND_D_RESOURCE" in
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# Tiny - Unbound's recommended cheap hardware config
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tiny) rt_mem=1 ; rt_conn=1 ;;
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# Small - Half RRCACHE and open ports
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small) rt_mem=8 ; rt_conn=5 ;;
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# Medium - Nearly default but with some added balancintg
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medium) rt_mem=16 ; rt_conn=10 ;;
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# Large - Double medium
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large) rt_mem=32 ; rt_conn=10 ;;
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# Whatever unbound does
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*) rt_mem=0 ; rt_conn=0 ;;
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esac
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if [ "$rt_mem" -gt 0 ] ; then
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{
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# Set memory sizing parameters
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echo " outgoing-range: $(($rt_conn*64))"
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echo " num-queries-per-thread: $(($rt_conn*32))"
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echo " outgoing-num-tcp: $(($rt_conn))"
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echo " incoming-num-tcp: $(($rt_conn))"
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echo " rrset-cache-size: $(($rt_mem*256))k"
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echo " msg-cache-size: $(($rt_mem*128))k"
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echo " key-cache-size: $(($rt_mem*128))k"
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echo " neg-cache-size: $(($rt_mem*64))k"
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echo " infra-cache-numhosts: $(($rt_mem*256))"
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echo
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} >> $UNBOUND_CONFFILE
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else
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logger -t unbound -s "default memory resource consumption"
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fi
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# Assembly of module-config: options is tricky; order matters
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modulestring="iterator"
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if [ "$UNBOUND_B_DNSSEC" -gt 0 ] ; then
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if [ ! -f "$UNBOUND_TIMEFILE" -a "$UNBOUND_B_NTP_BOOT" -gt 0 ] ; then
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# DNSSEC chicken and egg with getting NTP time
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echo " val-override-date: -1" >> $UNBOUND_CONFFILE
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fi
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{
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echo " harden-dnssec-stripped: yes"
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echo " val-clean-additional: yes"
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echo " ignore-cd-flag: yes"
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} >> $UNBOUND_CONFFILE
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modulestring="validator $modulestring"
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fi
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if [ "$UNBOUND_B_DNS64" -gt 0 ] ; then
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echo " dns64-prefix: $UNBOUND_IP_DNS64" >> $UNBOUND_CONFFILE
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modulestring="dns64 $modulestring"
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fi
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{
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# Print final module string
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echo " module-config: \"$modulestring\""
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echo
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} >> $UNBOUND_CONFFILE
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if [ "$UNBOUND_B_QRY_MINST" -gt 0 -a "$UNBOUND_B_QUERY_MIN" -gt 0 ] ; then
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{
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# Some query privacy but "strict" will break some name servers
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echo " qname-minimisation: yes"
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echo " qname-minimisation-strict: yes"
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} >> $UNBOUND_CONFFILE
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elif [ "$UNBOUND_B_QUERY_MIN" -gt 0 ] ; then
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# Minor improvement on query privacy
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echo " qname-minimisation: yes" >> $UNBOUND_CONFFILE
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else
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echo " qname-minimisation: no" >> $UNBOUND_CONFFILE
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fi
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case "$UNBOUND_D_RECURSION" in
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passive)
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{
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|
echo " prefetch: no"
|
|
echo " prefetch-key: no"
|
|
echo " target-fetch-policy: \"0 0 0 0 0\""
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
;;
|
|
|
|
aggressive)
|
|
{
|
|
echo " prefetch: yes"
|
|
echo " prefetch-key: yes"
|
|
echo " target-fetch-policy: \"3 2 1 0 0\""
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
;;
|
|
|
|
*)
|
|
logger -t unbound -s "default recursion configuration"
|
|
;;
|
|
esac
|
|
|
|
|
|
{
|
|
# Reload records more than 10 hours old
|
|
# DNSSEC 5 minute bogus cool down before retry
|
|
# Adaptive infrastructure info kept for 15 minutes
|
|
echo " cache-min-ttl: $UNBOUND_TTL_MIN"
|
|
echo " cache-max-ttl: 36000"
|
|
echo " val-bogus-ttl: 300"
|
|
echo " infra-host-ttl: 900"
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
|
|
|
|
if [ "$UNBOUND_B_HIDE_BIND" -gt 0 ] ; then
|
|
{
|
|
# Block server id and version DNS TXT records
|
|
echo " hide-identity: yes"
|
|
echo " hide-version: yes"
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
fi
|
|
|
|
|
|
if [ "$UNBOUND_B_PRIV_BLCK" -gt 0 ] ; then
|
|
{
|
|
# Remove _upstream_ or global reponses with private addresses.
|
|
# Unbounds own "local zone" and "forward zone" may still use these.
|
|
# RFC1918, RFC3927, RFC4291, RFC6598, RFC6890
|
|
echo " private-address: 10.0.0.0/8"
|
|
echo " private-address: 100.64.0.0/10"
|
|
echo " private-address: 169.254.0.0/16"
|
|
echo " private-address: 172.16.0.0/12"
|
|
echo " private-address: 192.168.0.0/16"
|
|
echo " private-address: fc00::/8"
|
|
echo " private-address: fd00::/8"
|
|
echo " private-address: fe80::/10"
|
|
} >> $UNBOUND_CONFFILE
|
|
fi
|
|
|
|
|
|
if [ "$UNBOUND_B_LOCL_BLCK" -gt 0 ] ; then
|
|
{
|
|
# Remove DNS reponses from upstream with loopback IP
|
|
# Black hole DNS method for ad blocking, so consider...
|
|
echo " private-address: 127.0.0.0/8"
|
|
echo " private-address: ::1/128"
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
|
|
else
|
|
echo >> $UNBOUND_CONFFILE
|
|
fi
|
|
|
|
|
|
# Except and accept domains as insecure (DNSSEC); work around broken domains
|
|
config_list_foreach "$cfg" "domain_insecure" create_domain_insecure
|
|
echo >> $UNBOUND_CONFFILE
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_access() {
|
|
# TODO: Unbound 1.6.0 added "tags" and "views", so we can add tags to
|
|
# each access-control IP block, and then divert access.
|
|
# -- "guest" WIFI will not be allowed to see local zone data
|
|
# -- "child" LAN can black whole a list of domains to http~deadpixel
|
|
|
|
|
|
if [ "$UNBOUND_B_LOCL_SERV" -gt 0 ] ; then
|
|
# Only respond to queries from which this device has an interface.
|
|
# Prevent DNS amplification attacks by not responding to the universe.
|
|
config_load network
|
|
config_foreach create_access_control interface
|
|
|
|
|
|
{
|
|
echo " access-control: 127.0.0.0/8 allow"
|
|
echo " access-control: ::1/128 allow"
|
|
echo " access-control: fe80::/10 allow"
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
|
|
else
|
|
{
|
|
echo " access-control: 0.0.0.0/0 allow"
|
|
echo " access-control: ::0/0 allow"
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
fi
|
|
|
|
|
|
{
|
|
# Amend your own "server:" stuff here
|
|
echo " include: $UNBOUND_SRV_CONF"
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_adblock() {
|
|
# TODO: Unbound 1.6.0 added "tags" and "views"; lets work with adblock team
|
|
local adb_enabled adb_file
|
|
|
|
if [ ! -x /usr/bin/adblock.sh -o ! -x /etc/init.d/adblock ] ; then
|
|
adb_enabled=0
|
|
else
|
|
/etc/init.d/adblock enabled && adb_enabled=1 || adb_enabled=0
|
|
fi
|
|
|
|
|
|
if [ "$adb_enabled" -gt 0 ] ; then
|
|
{
|
|
# Pull in your selected openwrt/pacakges/net/adblock generated lists
|
|
for adb_file in $UNBOUND_VARDIR/adb_list.* ; do
|
|
echo " include: $adb_file"
|
|
done
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
fi
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_hostname() {
|
|
if [ -n "$UNBOUND_TXT_DOMAIN" ] ; then
|
|
{
|
|
# TODO: Unbound 1.6.0 added "tags" and "views" and we could make
|
|
# domains by interface to prevent DNS from "guest" to "home"
|
|
echo " local-zone: $UNBOUND_TXT_DOMAIN. $UNBOUND_D_DOMAIN_TYPE"
|
|
echo " domain-insecure: $UNBOUND_TXT_DOMAIN"
|
|
echo " private-domain: $UNBOUND_TXT_DOMAIN"
|
|
echo
|
|
echo " local-zone: $UNBOUND_TXT_HOSTNAME. $UNBOUND_D_DOMAIN_TYPE"
|
|
echo " domain-insecure: $UNBOUND_TXT_HOSTNAME"
|
|
echo " private-domain: $UNBOUND_TXT_HOSTNAME"
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
|
|
|
|
case "$UNBOUND_D_DOMAIN_TYPE" in
|
|
deny|inform_deny|refuse|static)
|
|
{
|
|
# avoid upstream involvement in RFC6762 like responses (link only)
|
|
echo " local-zone: local. $UNBOUND_D_DOMAIN_TYPE"
|
|
echo " domain-insecure: local"
|
|
echo " private-domain: local"
|
|
echo
|
|
} >> $UNBOUND_CONFFILE
|
|
;;
|
|
esac
|
|
|
|
|
|
if [ "$UNBOUND_D_LAN_FQDN" -gt 0 -o "$UNBOUND_D_WAN_FQDN" -gt 0 ] ; then
|
|
config_load dhcp
|
|
config_foreach create_interface_dns dhcp
|
|
fi
|
|
fi
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_uci() {
|
|
local cfg="$1"
|
|
local dnsmasqpath hostnm
|
|
|
|
hostnm="$(uci_get system.@system[0].hostname | awk '{print tolower($0)}')"
|
|
UNBOUND_TXT_HOSTNAME=${hostnm:-thisrouter}
|
|
|
|
config_get_bool UNBOUND_B_SLAAC6_MAC "$cfg" dhcp4_slaac6 0
|
|
config_get_bool UNBOUND_B_DNS64 "$cfg" dns64 0
|
|
config_get_bool UNBOUND_B_HIDE_BIND "$cfg" hide_binddata 1
|
|
config_get_bool UNBOUND_B_LOCL_SERV "$cfg" localservice 1
|
|
config_get_bool UNBOUND_B_MAN_CONF "$cfg" manual_conf 0
|
|
config_get_bool UNBOUND_B_QUERY_MIN "$cfg" query_minimize 0
|
|
config_get_bool UNBOUND_B_QRY_MINST "$cfg" query_min_strict 0
|
|
config_get_bool UNBOUND_B_PRIV_BLCK "$cfg" rebind_protection 1
|
|
config_get_bool UNBOUND_B_LOCL_BLCK "$cfg" rebind_localhost 0
|
|
config_get_bool UNBOUND_B_CONTROL "$cfg" unbound_control 0
|
|
config_get_bool UNBOUND_B_DNSSEC "$cfg" validator 0
|
|
config_get_bool UNBOUND_B_NTP_BOOT "$cfg" validator_ntp 1
|
|
|
|
config_get UNBOUND_IP_DNS64 "$cfg" dns64_prefix "64:ff9b::/96"
|
|
|
|
config_get UNBOUND_N_EDNS_SIZE "$cfg" edns_size 1280
|
|
config_get UNBOUND_N_RX_PORT "$cfg" listen_port 53
|
|
config_get UNBOUND_N_ROOT_AGE "$cfg" root_age 7
|
|
|
|
config_get UNBOUND_D_DOMAIN_TYPE "$cfg" domain_type static
|
|
config_get UNBOUND_D_DHCP_LINK "$cfg" dhcp_link none
|
|
config_get UNBOUND_D_LAN_FQDN "$cfg" add_local_fqdn 0
|
|
config_get UNBOUND_D_PROTOCOL "$cfg" protocol mixed
|
|
config_get UNBOUND_D_RECURSION "$cfg" recursion passive
|
|
config_get UNBOUND_D_RESOURCE "$cfg" resource small
|
|
config_get UNBOUND_D_WAN_FQDN "$cfg" add_wan_fqdn 0
|
|
|
|
config_get UNBOUND_TTL_MIN "$cfg" ttl_min 120
|
|
config_get UNBOUND_TXT_DOMAIN "$cfg" domain lan
|
|
|
|
|
|
if [ "$UNBOUND_D_DHCP_LINK" = "none" ] ; then
|
|
config_get_bool UNBOUND_B_DNSMASQ "$cfg" dnsmasq_link_dns 0
|
|
|
|
|
|
if [ "$UNBOUND_B_DNSMASQ" -gt 0 ] ; then
|
|
UNBOUND_D_DHCP_LINK=dnsmasq
|
|
logger -t unbound -s "Please use 'dhcp_link' selector instead"
|
|
fi
|
|
fi
|
|
|
|
|
|
if [ "$UNBOUND_D_DHCP_LINK" = "dnsmasq" ] ; then
|
|
if [ ! -x /usr/sbin/dnsmasq -o ! -x /etc/init.d/dnsmasq ] ; then
|
|
UNBOUND_D_DHCP_LINK=none
|
|
else
|
|
/etc/init.d/dnsmasq enabled || UNBOUND_D_DHCP_LINK=none
|
|
fi
|
|
|
|
|
|
if [ "$UNBOUND_D_DHCP_LINK" = "none" ] ; then
|
|
logger -t unbound -s "cannot forward to dnsmasq"
|
|
fi
|
|
fi
|
|
|
|
|
|
if [ "$UNBOUND_D_DHCP_LINK" = "odhcpd" ] ; then
|
|
if [ ! -x /usr/sbin/odhcpd -o ! -x /etc/init.d/odhcpd ] ; then
|
|
UNBOUND_D_DHCP_LINK=none
|
|
else
|
|
/etc/init.d/odhcpd enabled || UNBOUND_D_DHCP_LINK=none
|
|
fi
|
|
|
|
|
|
if [ "$UNBOUND_D_DHCP_LINK" = "none" ] ; then
|
|
logger -t unbound -s "cannot receive records from odhcpd"
|
|
fi
|
|
fi
|
|
|
|
|
|
if [ "$UNBOUND_N_EDNS_SIZE" -lt 512 \
|
|
-o 4096 -lt "$UNBOUND_N_EDNS_SIZE" ] ; then
|
|
# exceeds range, back to default
|
|
UNBOUND_N_EDNS_SIZE=1280
|
|
fi
|
|
|
|
|
|
if [ "$UNBOUND_N_RX_PORT" -lt 1024 \
|
|
-o 10240 -lt "$UNBOUND_N_RX_PORT" ] ; then
|
|
# special port or in 5 digits, back to default
|
|
UNBOUND_N_RX_PORT=53
|
|
fi
|
|
|
|
|
|
if [ "$UNBOUND_TTL_MIN" -gt 1800 ] ; then
|
|
# that could have had awful side effects
|
|
UNBOUND_TTL_MIN=300
|
|
fi
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_start() {
|
|
config_load unbound
|
|
config_foreach unbound_uci unbound
|
|
unbound_mkdir
|
|
|
|
|
|
if [ "$UNBOUND_B_MAN_CONF" -eq 0 ] ; then
|
|
unbound_conf
|
|
unbound_access
|
|
unbound_adblock
|
|
|
|
if [ "$UNBOUND_D_DHCP_LINK" = "dnsmasq" ] ; then
|
|
dnsmasq_link
|
|
else
|
|
unbound_hostname
|
|
fi
|
|
|
|
unbound_control
|
|
fi
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_stop() {
|
|
local resolvsym=0
|
|
|
|
rootzone_update
|
|
|
|
|
|
if [ ! -x /usr/sbin/dnsmasq -o ! -x /etc/init.d/dnsmasq ] ; then
|
|
resolvsym=1
|
|
else
|
|
/etc/init.d/dnsmasq enabled || resolvsym=1
|
|
fi
|
|
|
|
|
|
if [ "$resolvsym" -gt 0 ] ; then
|
|
# set resolver file to normal, but don't stomp on dnsmasq
|
|
rm -f /tmp/resolv.conf
|
|
ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
|
|
fi
|
|
|
|
|
|
# Unbound has a log dump which takes time; don't overlap a "restart"
|
|
sleep 1
|
|
}
|
|
|
|
##############################################################################
|
|
|