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1597 lines
43 KiB
1597 lines
43 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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# Unbound is a full featured recursive server with many options. The UCI
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# provided tries to simplify and bundle options. This should make Unbound
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# easier to deploy. Even light duty routers may resolve recursively instead of
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# depending on a stub with the ISP. The UCI also attempts to replicate dnsmasq
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# features as used in base LEDE/OpenWrt. If there is a desire for more
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# detailed tuning, then manual conf file overrides are also made available.
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#
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##############################################################################
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# while useful (sh)ellcheck is pedantic and noisy
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# shellcheck disable=1091,2002,2004,2034,2039,2086,2094,2140,2154,2155
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UB_B_AUTH_ROOT=0
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UB_B_DNS_ASSIST=0
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UB_B_DNSSEC=0
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UB_B_DNS64=0
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UB_B_EXT_STATS=0
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UB_B_GATE_NAME=0
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UB_B_HIDE_BIND=1
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UB_B_IF_AUTO=1
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UB_B_LOCL_BLCK=0
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UB_B_LOCL_SERV=1
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UB_B_MAN_CONF=0
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UB_B_NTP_BOOT=1
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UB_B_QUERY_MIN=0
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UB_B_QRY_MINST=0
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UB_B_SLAAC6_MAC=0
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UB_D_CONTROL=0
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UB_D_DOMAIN_TYPE=static
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UB_D_DHCP_LINK=none
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UB_D_EXTRA_DNS=0
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UB_D_LAN_FQDN=0
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UB_D_PRIV_BLCK=1
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UB_D_PROTOCOL=mixed
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UB_D_RESOURCE=small
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UB_D_RECURSION=passive
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UB_D_VERBOSE=1
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UB_D_WAN_FQDN=0
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UB_IP_DNS64="64:ff9b::/96"
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UB_N_EDNS_SIZE=1232
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UB_N_RX_PORT=53
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UB_N_ROOT_AGE=9
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UB_N_THREADS=1
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UB_N_RATE_LMT=0
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UB_TTL_MIN=120
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UB_TXT_DOMAIN=lan
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UB_TXT_HOSTNAME=thisrouter
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##############################################################################
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# reset as a combo with UB_B_NTP_BOOT and some time stamp files
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UB_B_READY=1
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# keep track of assignments during inserted resource records
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UB_LIST_NETW_ALL=""
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UB_LIST_NETW_LAN=""
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UB_LIST_NETW_WAN=""
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UB_LIST_INSECURE=""
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UB_LIST_ZONE_SERVERS=""
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UB_LIST_ZONE_NAMES=""
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##############################################################################
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. /lib/functions.sh
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. /lib/functions/network.sh
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. /usr/lib/unbound/defaults.sh
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. /usr/lib/unbound/dnsmasq.sh
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. /usr/lib/unbound/iptools.sh
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##############################################################################
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bundle_all_networks() {
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local cfg="$1"
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local ifname ifdashname validip
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local subnet subnets subnets4 subnets6
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network_get_subnets subnets4 "$cfg"
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network_get_subnets6 subnets6 "$cfg"
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network_get_device ifname "$cfg"
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ifdashname="${ifname//./-}"
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subnets="$subnets4 $subnets6"
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if [ -n "$subnets" ] ; then
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for subnet in $subnets ; do
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validip=$( valid_subnet_any $subnet )
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if [ "$validip" = "ok" ] ; then
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UB_LIST_NETW_ALL="$UB_LIST_NETW_ALL $ifdashname@$subnet"
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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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bundle_dhcp_networks() {
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local cfg="$1"
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local interface ifsubnet ifname ifdashname ignore
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config_get_bool ignore "$cfg" ignore 0
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config_get interface "$cfg" interface ""
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network_get_device ifname "$interface"
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ifdashname="${ifname//./-}"
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if [ $ignore -eq 0 ] && [ -n "$ifdashname" ] \
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&& [ -n "$UB_LIST_NETW_ALL" ] ; then
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for ifsubnet in $UB_LIST_NETW_ALL ; do
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case $ifsubnet in
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"${ifdashname}"@*)
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# Special GLA protection for local block; ULA protected default
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UB_LIST_NETW_LAN="$UB_LIST_NETW_LAN $ifsubnet"
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;;
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esac
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done
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fi
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}
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##############################################################################
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bundle_lan_networks() {
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local interface="$1"
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local ifsubnet ifname ifdashname
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network_get_device ifname "$interface"
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ifdashname="${ifname//./-}"
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if [ -n "$ifdashname" ] && [ -n "$UB_LIST_NETW_ALL" ] ; then
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for ifsubnet in $UB_LIST_NETW_ALL ; do
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case $ifsubnet in
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"${ifdashname}"@*)
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# Special GLA protection for local block; ULA protected default
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UB_LIST_NETW_LAN="$UB_LIST_NETW_LAN $ifsubnet"
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;;
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esac
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done
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fi
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}
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##############################################################################
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bundle_wan_networks() {
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local interface="$1"
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local ifsubnet ifname ifdashname
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network_get_device ifname "$interface"
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ifdashname="${ifname//./-}"
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if [ -n "$ifdashname" ] && [ -n "$UB_LIST_NETW_ALL" ] ; then
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for ifsubnet in $UB_LIST_NETW_ALL ; do
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case $UB_LIST_NETW_LAN in
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*"${ifsubnet}"*)
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# If LAN, then not WAN ... scripts might become complex
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;;
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*)
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case $ifsubnet in
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"${ifdashname}"@*)
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# Special GLA protection for local block; ULA protected default
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UB_LIST_NETW_WAN="$UB_LIST_NETW_WAN $ifsubnet"
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;;
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esac
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;;
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esac
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done
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fi
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}
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##############################################################################
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bundle_resolv_conf_servers() {
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local resolvers=$( awk '/nameserver/ { print $2 }' $UB_RESOLV_AUTO )
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UB_LIST_ZONE_SERVERS="$UB_LIST_ZONE_SERVERS $resolvers"
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}
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##############################################################################
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bundle_zone_names() {
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UB_LIST_ZONE_NAMES="$UB_LIST_ZONE_NAMES $1"
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}
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##############################################################################
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bundle_zone_servers() {
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UB_LIST_ZONE_SERVERS="$UB_LIST_ZONE_SERVERS $1"
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}
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##############################################################################
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bundle_domain_insecure() {
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UB_LIST_INSECURE="$UB_LIST_INSECURE $1"
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}
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##############################################################################
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unbound_mkdir() {
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local filestuff
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if [ "$UB_D_DHCP_LINK" = "odhcpd" ] ; then
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local dhcp_origin=$( uci_get dhcp.@odhcpd[0].leasefile )
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local dhcp_dir=$( dirname $dhcp_origin )
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if [ ! -d "$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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fi
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if [ -f $UB_RKEY_FILE ] ; then
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filestuff=$( cat $UB_RKEY_FILE )
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case "$filestuff" in
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*"state=2 [ VALID ]"*)
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# Lets not lose RFC 5011 tracking if we don't have to
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cp -p $UB_RKEY_FILE $UB_RKEY_FILE.keep
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;;
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esac
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fi
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# Blind copy /etc/unbound to /var/lib/unbound
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mkdir -p $UB_VARDIR
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rm -f $UB_VARDIR/dhcp_*
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touch $UB_TOTAL_CONF
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cp -p $UB_ETCDIR/*.conf $UB_VARDIR/
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cp -p $UB_ETCDIR/root.* $UB_VARDIR/
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if [ ! -f $UB_RHINT_FILE ] ; 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 $UB_RHINT_FILE
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elif [ $UB_B_READY -eq 0 ] ; then
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logger -t unbound -s "default root hints (built in root-servers.net)"
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fi
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fi
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if [ ! -f $UB_RKEY_FILE ] ; 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 $UB_RKEY_FILE
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elif [ -x $UB_ANCHOR ] ; then
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$UB_ANCHOR -a $UB_RKEY_FILE
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elif [ $UB_B_READY -eq 0 ] ; then
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logger -t unbound -s "default trust anchor (built in root DS record)"
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fi
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fi
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if [ -f $UB_RKEY_FILE.keep ] ; then
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# root.key.keep is reused if newest
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cp -u $UB_RKEY_FILE.keep $UB_RKEY_FILE
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rm -f $UB_RKEY_FILE.keep
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fi
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# Ensure access and prepare to jail
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chown -R unbound:unbound $UB_VARDIR
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chmod 755 $UB_VARDIR
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chmod 644 $UB_VARDIR/*
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if [ -x /usr/sbin/unbound-control-setup ] ; then
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if [ ! -f $UB_CTLKEY_FILE ] || [ ! -f $UB_CTLPEM_FILE ] \
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|| [ ! -f $UB_SRVKEY_FILE ] || [ ! -f $UB_SRVPEM_FILE ] ; then
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case "$UB_D_CONTROL" in
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[2-3])
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# unbound-control-setup for encrypt opt. 2 and 3, but not 4 "static"
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/usr/sbin/unbound-control-setup -d $UB_ETCDIR
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chown -R unbound:unbound $UB_CTLKEY_FILE $UB_CTLPEM_FILE \
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$UB_SRVKEY_FILE $UB_SRVPEM_FILE
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chmod 640 $UB_CTLKEY_FILE $UB_CTLPEM_FILE \
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$UB_SRVKEY_FILE $UB_SRVPEM_FILE
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;;
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esac
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fi
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fi
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if [ -f "$UB_TIME_FILE" ] ; then
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# NTP is done so its like you actually had an RTC
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UB_B_READY=1
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UB_B_NTP_BOOT=0
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elif [ $UB_B_NTP_BOOT -eq 0 ] ; then
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# time is considered okay on this device (ignore /etc/hotplug/ntpd/unbound)
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date -Is > $UB_TIME_FILE
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UB_B_READY=0
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UB_B_NTP_BOOT=0
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else
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# DNSSEC-TIME will not reconcile
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UB_B_READY=0
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UB_B_NTP_BOOT=1
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fi
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}
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##############################################################################
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unbound_control() {
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echo "# $UB_CTRL_CONF generated by UCI $( date -Is )" > $UB_CTRL_CONF
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if [ $UB_D_CONTROL -gt 1 ] ; then
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if [ ! -f $UB_CTLKEY_FILE ] || [ ! -f $UB_CTLPEM_FILE ] \
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|| [ ! -f $UB_SRVKEY_FILE ] || [ ! -f $UB_SRVPEM_FILE ] ; then
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# Key files need to be present; if unbound-control-setup was found, then
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# they might have been made during unbound_makedir() above.
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UB_D_CONTROL=0
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fi
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fi
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case "$UB_D_CONTROL" in
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1)
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{
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# Local Host Only Unencrypted Remote Control
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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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} >> $UB_CTRL_CONF
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;;
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2)
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{
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# Local Host Only Encrypted Remote Control
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echo "remote-control:"
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echo " control-enable: yes"
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echo " control-use-cert: yes"
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echo " control-interface: 127.0.0.1"
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echo " control-interface: ::1"
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echo " server-key-file: $UB_SRVKEY_FILE"
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echo " server-cert-file: $UB_SRVPEM_FILE"
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echo " control-key-file: $UB_CTLKEY_FILE"
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echo " control-cert-file: $UB_CTLPEM_FILE"
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echo
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} >> $UB_CTRL_CONF
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;;
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[3-4])
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{
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# Network Encrypted Remote Control
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# (3) may auto setup and (4) must have static key/pem files
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# TODO: add UCI list for interfaces to bind
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echo "remote-control:"
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echo " control-enable: yes"
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echo " control-use-cert: yes"
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echo " control-interface: 0.0.0.0"
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echo " control-interface: ::0"
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echo " server-key-file: $UB_SRVKEY_FILE"
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echo " server-cert-file: $UB_SRVPEM_FILE"
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echo " control-key-file: $UB_CTLKEY_FILE"
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echo " control-cert-file: $UB_CTLPEM_FILE"
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echo
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} >> $UB_CTRL_CONF
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;;
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esac
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}
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##############################################################################
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unbound_zone() {
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local cfg=$1
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local servers_ip=""
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local servers_host=""
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local zone_sym zone_name zone_type zone_enabled zone_file
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local tls_upstream fallback
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local server port tls_port tls_index tls_suffix url_dir dns_ast
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if [ ! -f "$UB_ZONE_CONF" ] ; then
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echo "# $UB_ZONE_CONF generated by UCI $( date -Is )" > $UB_ZONE_CONF
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fi
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config_get_bool zone_enabled "$cfg" enabled 0
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if [ $zone_enabled -eq 1 ] ; then
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# these lists are built for each zone; empty to start
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UB_LIST_ZONE_NAMES=""
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UB_LIST_ZONE_SERVERS=""
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config_get zone_type "$cfg" zone_type ""
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config_get port "$cfg" port ""
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config_get tls_index "$cfg" tls_index ""
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config_get tls_port "$cfg" tls_port 853
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config_get url_dir "$cfg" url_dir ""
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config_get dns_ast "$cfg" dns_assist none
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config_get_bool resolv_conf "$cfg" resolv_conf 0
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config_get_bool fallback "$cfg" fallback 1
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config_get_bool tls_upstream "$cfg" tls_upstream 0
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config_list_foreach "$cfg" zone_name bundle_zone_names
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config_list_foreach "$cfg" server bundle_zone_servers
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# string formating for Unbound syntax
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tls_suffix="${tls_port:+@${tls_port}${tls_index:+#${tls_index}}}"
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[ $fallback -eq 0 ] && fallback=no || fallback=yes
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[ $tls_upstream -eq 0 ] && tls_upstream=no || tls_upstream=yes
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if [ $resolv_conf -eq 1 ] ; then
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bundle_resolv_conf_servers
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fi
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else
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zone_type=skip
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fi
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case "$dns_ast" in
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bind)
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if [ -x /usr/sbin/bind ] && [ -x /etc/init.d/bind ] ; then
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if /etc/init.d/bind enabled ; then
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dns_ast=1
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else
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dns_ast=0
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fi
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else
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dns_ast=0
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fi
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;;
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dnsmasq)
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if [ -x /usr/sbin/dnsmasq ] && [ -x /etc/init.d/dnsmasq ] ; then
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if /etc/init.d/dnsmasq enabled ; then
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dns_ast=1
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else
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dns_ast=0
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fi
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else
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dns_ast=0
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fi
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;;
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htpps-dns-proxy | https-dns-proxy)
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if [ -x /usr/sbin/https-dns-proxy ] \
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&& [ -x /etc/init.d/https-dns-proxy ] ; then
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if /etc/init.d/https-dns-proxy ; then
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dns_ast=1
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else
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dns_ast=0
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fi
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else
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dns_ast=0
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fi
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;;
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ipset-dns)
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if [ -x /usr/sbin/ipset-dns ] && [ -x /etc/init.d/ipset-dns ] ; then
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if /etc/init.d/ipset-dns enabled ; then
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dns_ast=1
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else
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dns_ast=0
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fi
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else
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dns_ast=0
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fi
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;;
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nsd)
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if [ -x /usr/sbin/nsd ] && [ -x /etc/init.d/nsd ] ; then
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if /etc/init.d/nsd enabled ; then
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dns_ast=1
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else
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dns_ast=0
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fi
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else
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dns_ast=0
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fi
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;;
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|
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unprotected-loop)
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|
# Soft brick risk. The server you are looking to connect to may be offline
|
|
# and cause loop error: procd, sysupgrade, package order, and other issues.
|
|
dns_ast=1
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;;
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|
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*)
|
|
# Unbound has a local forward blocking option, default on, instead of loop
|
|
# detection. If it is released, then it may be a soft brick risk.
|
|
dns_ast=0
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;;
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esac
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|
|
if [ $dns_ast -gt 0 ] ; then
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UB_B_DNS_ASSIST=1
|
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fi
|
|
|
|
|
|
case $zone_type in
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auth_zone)
|
|
if [ $UB_B_NTP_BOOT -eq 0 ] && [ -n "$UB_LIST_ZONE_NAMES" ] \
|
|
&& { [ -n "$url_dir" ] || [ -n "$UB_LIST_ZONE_SERVERS" ] ; } ; then
|
|
# Note AXFR may have large downloads. If NTP restart is configured,
|
|
# then this can cause procd to force a process kill.
|
|
for zone_name in $UB_LIST_ZONE_NAMES ; do
|
|
if [ "$zone_name" = "." ] ; then
|
|
zone_sym=.
|
|
zone_name=root
|
|
zone_file=root.zone
|
|
else
|
|
zone_sym=$zone_name
|
|
zone_file=$zone_name.zone
|
|
zone_file=${zone_file//../.}
|
|
fi
|
|
|
|
|
|
{
|
|
# generate an auth-zone: with switches for prefetch cache
|
|
echo "auth-zone:"
|
|
echo " name: $zone_sym"
|
|
for server in $UB_LIST_ZONE_SERVERS ; do
|
|
echo " master: $server${port:+@${port}}"
|
|
done
|
|
if [ -n "$url_dir" ] ; then
|
|
echo " url: $url_dir$zone_file"
|
|
fi
|
|
echo " fallback-enabled: $fallback"
|
|
echo " for-downstream: no"
|
|
echo " for-upstream: yes"
|
|
echo " zonefile: $zone_file"
|
|
echo
|
|
} >> $UB_ZONE_CONF
|
|
done
|
|
fi
|
|
;;
|
|
|
|
forward_zone)
|
|
if [ ! -f $UB_TLS_ETC_FILE ] && [ "$tls_upstream" = "yes" ] ; then
|
|
logger -p 4 -t unbound -s \
|
|
"Forward-zone TLS benefits from authentication in package 'ca-bundle'"
|
|
fi
|
|
|
|
|
|
if [ -n "$UB_LIST_ZONE_NAMES" ] && [ -n "$UB_LIST_ZONE_SERVERS" ] ; then
|
|
for server in $UB_LIST_ZONE_SERVERS ; do
|
|
if [ "$( valid_subnet_any $server )" = "ok" ] \
|
|
|| { [ "$( local_subnet $server )" = "ok" ] \
|
|
&& [ $dns_ast -gt 0 ] ; } ; then
|
|
case $server in
|
|
*@[0-9]*|*#[A-Za-z0-9]*)
|
|
# unique Unbound option for server address
|
|
servers_ip="$servers_ip $server"
|
|
;;
|
|
|
|
*)
|
|
if [ "$tls_upstream" = "yes" ] ; then
|
|
servers_ip="$servers_ip $server$tls_suffix"
|
|
else
|
|
servers_ip="$servers_ip $server${port:+@${port}}"
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
else
|
|
case $server in
|
|
127.*|::0*)
|
|
# soft brick loop back risk see DNS assist above
|
|
echo "do nothing" >/dev/null
|
|
;;
|
|
|
|
*@[0-9]*|*#[A-Za-z0-9]*)
|
|
# unique Unbound option for server host name
|
|
servers_host="$servers_host $server"
|
|
;;
|
|
|
|
*)
|
|
if [ "$tls_upstream" = "yes" ] ; then
|
|
servers_host="$servers_host $server${tls_port:+@${tls_port}}"
|
|
else
|
|
servers_host="$servers_host $server${port:+@${port}}"
|
|
fi
|
|
;;
|
|
esac
|
|
fi
|
|
done
|
|
|
|
|
|
for zonename in $UB_LIST_ZONE_NAMES ; do
|
|
{
|
|
# generate a forward-zone with or without tls
|
|
echo "forward-zone:"
|
|
echo " name: $zonename"
|
|
for server in $servers_host ; do
|
|
echo " forward-host: $server"
|
|
done
|
|
for server in $servers_ip ; do
|
|
echo " forward-addr: $server"
|
|
done
|
|
echo " forward-first: $fallback"
|
|
echo " forward-tls-upstream: $tls_upstream"
|
|
echo
|
|
} >> $UB_ZONE_CONF
|
|
done
|
|
fi
|
|
;;
|
|
|
|
stub_zone)
|
|
if [ -n "$UB_LIST_ZONE_NAMES" ] && [ -n "$UB_LIST_ZONE_SERVERS" ] ; then
|
|
for zonename in $UB_LIST_ZONE_NAMES ; do
|
|
{
|
|
# generate a stub-zone: or ensure short cut to authority NS
|
|
echo "stub-zone:"
|
|
echo " name: $zonename"
|
|
for server in $UB_LIST_ZONE_SERVERS ; do
|
|
echo " stub-addr: $server${port:+@${port}}"
|
|
done
|
|
echo " stub-first: $fallback"
|
|
echo
|
|
} >> $UB_ZONE_CONF
|
|
done
|
|
fi
|
|
;;
|
|
|
|
*)
|
|
{
|
|
echo " # Special zone $zonename was not enabled or had UCI conflicts."
|
|
echo
|
|
} >> $UB_ZONE_CONF
|
|
;;
|
|
esac
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_conf() {
|
|
local rt_mem rt_conn rt_buff modulestring domain ifsubnet moduleopts
|
|
|
|
{
|
|
# server: for this whole function
|
|
echo "# $UB_CORE_CONF generated by UCI $( date -Is )"
|
|
echo "server:"
|
|
echo " username: unbound"
|
|
echo " chroot: $UB_VARDIR"
|
|
echo " directory: $UB_VARDIR"
|
|
echo " pidfile: $UB_PIDFILE"
|
|
} > $UB_CORE_CONF
|
|
|
|
|
|
if [ -f "$UB_TLS_ETC_FILE" ] ; then
|
|
# TLS cert bundle for upstream forwarder and https zone files
|
|
# This is loaded before drop to root, so pull from /etc/ssl
|
|
echo " tls-cert-bundle: $UB_TLS_ETC_FILE" >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ -f "$UB_RHINT_FILE" ] ; then
|
|
# Optional hints if found
|
|
echo " root-hints: $UB_RHINT_FILE" >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ $UB_B_DNSSEC -gt 0 ] && [ -f "$UB_RKEY_FILE" ] ; then
|
|
{
|
|
echo " auto-trust-anchor-file: $UB_RKEY_FILE"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
|
|
else
|
|
echo >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ $UB_N_THREADS -gt 1 ] \
|
|
&& $PROG -V | grep -q "Linked libs:.*libevent" ; then
|
|
# heavy variant using "threads" may need substantial resources
|
|
echo " num-threads: 2" >> $UB_CORE_CONF
|
|
else
|
|
# light variant with one "process" is much more efficient with light traffic
|
|
echo " num-threads: 1" >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
{
|
|
# Limited threading (2) with one shared slab
|
|
echo " msg-cache-slabs: 1"
|
|
echo " rrset-cache-slabs: 1"
|
|
echo " infra-cache-slabs: 1"
|
|
echo " key-cache-slabs: 1"
|
|
echo " ratelimit-slabs: 1"
|
|
echo " ip-ratelimit-slabs: 1"
|
|
echo
|
|
# Logging
|
|
echo " use-syslog: yes"
|
|
echo " statistics-interval: 0"
|
|
echo " statistics-cumulative: no"
|
|
} >> $UB_CORE_CONF
|
|
|
|
|
|
if [ $UB_D_VERBOSE -ge 0 ] && [ $UB_D_VERBOSE -le 5 ] ; then
|
|
echo " verbosity: $UB_D_VERBOSE" >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ $UB_B_EXT_STATS -gt 0 ] ; then
|
|
{
|
|
# store more data in memory for unbound-control to report
|
|
echo " extended-statistics: yes"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
|
|
else
|
|
{
|
|
# store Less
|
|
echo " extended-statistics: no"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ $UB_B_IF_AUTO -gt 0 ] ; then
|
|
echo " interface-automatic: yes" >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ $UB_B_DNS_ASSIST -gt 0 ] ; then
|
|
echo " do-not-query-localhost: no" >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
{
|
|
# avoid interference with SPI/NAT on both reserved and common server ports
|
|
echo " edns-buffer-size: $UB_N_EDNS_SIZE"
|
|
echo " port: $UB_N_RX_PORT"
|
|
echo " outgoing-port-permit: 10240-65535"
|
|
} >> $UB_CORE_CONF
|
|
|
|
|
|
case "$UB_D_PROTOCOL" in
|
|
ip4_only)
|
|
{
|
|
echo " do-ip4: yes"
|
|
echo " do-ip6: no"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
;;
|
|
|
|
ip6_only)
|
|
{
|
|
echo " do-ip4: no"
|
|
echo " do-ip6: yes"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
;;
|
|
|
|
ip6_local)
|
|
{
|
|
# answer your local IPv6 network but avoid broken ISP IPv6
|
|
echo " do-ip4: yes"
|
|
echo " do-ip6: yes"
|
|
echo " prefer-ip4: yes"
|
|
echo " prefer-ip6: no"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
;;
|
|
|
|
ip6_prefer)
|
|
{
|
|
# RFC compliant dual stack
|
|
echo " do-ip4: yes"
|
|
echo " do-ip6: yes"
|
|
echo " prefer-ip4: no"
|
|
echo " prefer-ip6: yes"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
;;
|
|
|
|
mixed)
|
|
{
|
|
echo " do-ip4: yes"
|
|
echo " do-ip6: yes"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
;;
|
|
|
|
*)
|
|
if [ $UB_B_READY -eq 0 ] ; then
|
|
logger -t unbound -s "default protocol configuration"
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
|
|
case "$UB_D_RESOURCE" in
|
|
# Tiny - Unbound's recommended cheap hardware config
|
|
tiny) rt_mem=1 ; rt_conn=5 ; rt_buff=1 ;;
|
|
# Small - Half RRCACHE and open ports
|
|
small) rt_mem=8 ; rt_conn=10 ; rt_buff=2 ;;
|
|
# Medium - Nearly default but with some added balancintg
|
|
medium) rt_mem=16 ; rt_conn=20 ; rt_buff=4 ;;
|
|
# Large - Double medium
|
|
large) rt_mem=32 ; rt_conn=50 ; rt_buff=4 ;;
|
|
# Whatever unbound does
|
|
*) rt_mem=0 ; rt_conn=0 ;;
|
|
esac
|
|
|
|
|
|
if [ $rt_mem -gt 0 ] ; then
|
|
{
|
|
# Other harding and options for an embedded router
|
|
echo " harden-short-bufsize: yes"
|
|
echo " harden-large-queries: yes"
|
|
echo " harden-glue: yes"
|
|
echo " use-caps-for-id: no"
|
|
echo
|
|
# Set memory sizing parameters
|
|
echo " msg-buffer-size: $(($rt_buff*8192))"
|
|
echo " outgoing-range: $(($rt_conn*32))"
|
|
echo " num-queries-per-thread: $(($rt_conn*16))"
|
|
echo " outgoing-num-tcp: $(($rt_conn))"
|
|
echo " incoming-num-tcp: $(($rt_conn))"
|
|
echo " rrset-cache-size: $(($rt_mem*256))k"
|
|
echo " msg-cache-size: $(($rt_mem*128))k"
|
|
echo " stream-wait-size: $(($rt_mem*128))k"
|
|
echo " key-cache-size: $(($rt_mem*128))k"
|
|
echo " neg-cache-size: $(($rt_mem*32))k"
|
|
echo " ratelimit-size: $(($rt_mem*32))k"
|
|
echo " ip-ratelimit-size: $(($rt_mem*32))k"
|
|
echo " infra-cache-numhosts: $(($rt_mem*256))"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
|
|
elif [ $UB_B_READY -eq 0 ] ; then
|
|
logger -t unbound -s "default memory configuration"
|
|
fi
|
|
|
|
|
|
# Assembly of module-config: options is tricky; order matters
|
|
moduleopts="$( /usr/sbin/unbound -V )"
|
|
modulestring="iterator"
|
|
|
|
|
|
case $moduleopts in
|
|
*with-python*)
|
|
modulestring="python $modulestring"
|
|
;;
|
|
esac
|
|
|
|
|
|
if [ $UB_B_DNSSEC -gt 0 ] ; then
|
|
if [ $UB_B_NTP_BOOT -gt 0 ] ; then
|
|
# DNSSEC chicken and egg with getting NTP time
|
|
echo " val-override-date: -1" >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
{
|
|
echo " harden-dnssec-stripped: yes"
|
|
echo " val-clean-additional: yes"
|
|
echo " ignore-cd-flag: yes"
|
|
} >> $UB_CORE_CONF
|
|
|
|
|
|
modulestring="validator $modulestring"
|
|
fi
|
|
|
|
|
|
case $moduleopts in
|
|
*enable-subnet*)
|
|
modulestring="subnetcache $modulestring"
|
|
;;
|
|
esac
|
|
|
|
|
|
if [ $UB_B_DNS64 -gt 0 ] ; then
|
|
echo " dns64-prefix: $UB_IP_DNS64" >> $UB_CORE_CONF
|
|
|
|
modulestring="dns64 $modulestring"
|
|
fi
|
|
|
|
|
|
{
|
|
# Print final module string
|
|
echo " module-config: \"$modulestring\""
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
|
|
|
|
case "$UB_D_RECURSION" in
|
|
passive)
|
|
{
|
|
# Some query privacy but "strict" will break some servers
|
|
if [ $UB_B_QRY_MINST -gt 0 ] && [ "$UB_B_QUERY_MIN" -gt 0 ] ; then
|
|
echo " qname-minimisation: yes"
|
|
echo " qname-minimisation-strict: yes"
|
|
elif [ $UB_B_QUERY_MIN -gt 0 ] ; then
|
|
echo " qname-minimisation: yes"
|
|
else
|
|
echo " qname-minimisation: no"
|
|
fi
|
|
# Use DNSSEC to quickly understand NXDOMAIN ranges
|
|
if [ $UB_B_DNSSEC -gt 0 ] ; then
|
|
echo " aggressive-nsec: yes"
|
|
echo " prefetch-key: no"
|
|
fi
|
|
# On demand fetching
|
|
echo " prefetch: no"
|
|
echo " target-fetch-policy: \"0 0 0 0 0\""
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
;;
|
|
|
|
aggressive)
|
|
{
|
|
# Some query privacy but "strict" will break some servers
|
|
if [ $UB_B_QRY_MINST -gt 0 ] && [ $UB_B_QUERY_MIN -gt 0 ] ; then
|
|
echo " qname-minimisation: yes"
|
|
echo " qname-minimisation-strict: yes"
|
|
elif [ $UB_B_QUERY_MIN -gt 0 ] ; then
|
|
echo " qname-minimisation: yes"
|
|
else
|
|
echo " qname-minimisation: no"
|
|
fi
|
|
# Use DNSSEC to quickly understand NXDOMAIN ranges
|
|
if [ $UB_B_DNSSEC -gt 0 ] ; then
|
|
echo " aggressive-nsec: yes"
|
|
echo " prefetch-key: yes"
|
|
fi
|
|
# Prefetch what can be
|
|
echo " prefetch: yes"
|
|
echo " target-fetch-policy: \"3 2 1 0 0\""
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
;;
|
|
|
|
*)
|
|
if [ $UB_B_READY -eq 0 ] ; then
|
|
logger -t unbound -s "default recursion configuration"
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
|
|
if [ 10 -lt $UB_N_RATE_LMT ] && [ $UB_N_RATE_LMT -lt 100000 ] ; then
|
|
{
|
|
# Protect the server from query floods which is helpful on weaker CPU
|
|
# Per client rate limit is half the maximum to leave head room open
|
|
echo " ratelimit: $UB_N_RATE_LMT"
|
|
echo " ip-ratelimit: $(($UB_N_RATE_LMT/2))"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
{
|
|
# Reload records more than 20 hours old
|
|
# DNSSEC 5 minute bogus cool down before retry
|
|
# Adaptive infrastructure info kept for 15 minutes
|
|
echo " cache-min-ttl: $UB_TTL_MIN"
|
|
echo " cache-max-ttl: 72000"
|
|
echo " cache-max-negative-ttl: $UB_NEG_TTL_MAX"
|
|
echo " val-bogus-ttl: 300"
|
|
echo " infra-host-ttl: 900"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
|
|
|
|
if [ $UB_B_HIDE_BIND -gt 0 ] ; then
|
|
{
|
|
# Block server id and version DNS TXT records
|
|
echo " hide-identity: yes"
|
|
echo " hide-version: yes"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ $UB_D_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::/7"
|
|
echo " private-address: fe80::/10"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ -n "$UB_LIST_NETW_LAN" ] && [ $UB_D_PRIV_BLCK -gt 1 ] ; then
|
|
{
|
|
for ifsubnet in $UB_LIST_NETW_LAN ; do
|
|
case $ifsubnet in
|
|
*@[1-9][0-9a-f][0-9a-f][0-9a-f]:*:[0-9a-f]*)
|
|
# Remove global DNS responses with your local network IP6 GLA
|
|
echo " private-address: ${ifsubnet#*@}"
|
|
;;
|
|
esac
|
|
done
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ $UB_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
|
|
} >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ -n "$UB_LIST_INSECURE" ] ; then
|
|
{
|
|
for domain in $UB_LIST_INSECURE ; do
|
|
# Except and accept domains without (DNSSEC); work around broken domains
|
|
echo " domain-insecure: $domain"
|
|
done
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ $UB_B_LOCL_SERV -gt 0 ] && [ -n "$UB_LIST_NETW_LAN" ] ; then
|
|
{
|
|
for ifsubnet in $UB_LIST_NETW_LAN ; do
|
|
# Only respond to queries from subnets which have an interface.
|
|
# Prevent DNS amplification attacks by not responding to the universe.
|
|
echo " access-control: ${ifsubnet#*@} allow"
|
|
done
|
|
echo " access-control: 127.0.0.0/8 allow"
|
|
echo " access-control: ::1/128 allow"
|
|
echo " access-control: fe80::/10 allow"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
|
|
else
|
|
{
|
|
echo " access-control: 0.0.0.0/0 allow"
|
|
echo " access-control: ::0/0 allow"
|
|
echo
|
|
} >> $UB_CORE_CONF
|
|
fi
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_hostname() {
|
|
local ifsubnet ifarpa ifaddr ifname iffqdn
|
|
local ulaprefix hostfqdn name names namerec ptrrec
|
|
local zonetype=0
|
|
|
|
echo "# $UB_HOST_CONF generated by UCI $( date -Is )" > $UB_HOST_CONF
|
|
|
|
|
|
if [ "$UB_D_DHCP_LINK" = "dnsmasq" ] ; then
|
|
{
|
|
echo "# Local zone is handled by dnsmasq"
|
|
echo
|
|
} >> $UB_HOST_CONF
|
|
|
|
elif [ -n "$UB_TXT_DOMAIN" ] \
|
|
&& { [ $UB_D_WAN_FQDN -gt 0 ] || [ $UB_D_LAN_FQDN -gt 0 ] ; } ; then
|
|
case "$UB_D_DOMAIN_TYPE" in
|
|
deny|inform_deny|refuse|static)
|
|
{
|
|
# type static means only this router has your domain
|
|
echo " domain-insecure: $UB_TXT_DOMAIN"
|
|
echo " private-domain: $UB_TXT_DOMAIN"
|
|
echo " local-zone: $UB_TXT_DOMAIN $UB_D_DOMAIN_TYPE"
|
|
echo " local-data: \"$UB_TXT_DOMAIN. $UB_XSOA\""
|
|
echo " local-data: \"$UB_TXT_DOMAIN. $UB_XNS\""
|
|
echo " local-data: '$UB_TXT_DOMAIN. $UB_XTXT'"
|
|
echo
|
|
if [ "$UB_TXT_DOMAIN" != "local" ] ; then
|
|
# avoid involvement in RFC6762, unless it is the local zone name
|
|
echo " local-zone: local always_nxdomain"
|
|
echo
|
|
fi
|
|
} >> $UB_HOST_CONF
|
|
zonetype=2
|
|
;;
|
|
|
|
inform|transparent|typetransparent)
|
|
{
|
|
# transparent will permit forward-zone: or stub-zone: clauses
|
|
echo " private-domain: $UB_TXT_DOMAIN"
|
|
echo " local-zone: $UB_TXT_DOMAIN $UB_D_DOMAIN_TYPE"
|
|
echo
|
|
} >> $UB_HOST_CONF
|
|
zonetype=1
|
|
;;
|
|
esac
|
|
|
|
|
|
{
|
|
# Hostname as TLD works, but not transparent through recursion (singular)
|
|
echo " domain-insecure: $UB_TXT_HOSTNAME"
|
|
echo " private-domain: $UB_TXT_HOSTNAME"
|
|
echo " local-zone: $UB_TXT_HOSTNAME static"
|
|
echo " local-data: \"$UB_TXT_HOSTNAME. $UB_XSOA\""
|
|
echo " local-data: \"$UB_TXT_HOSTNAME. $UB_XNS\""
|
|
echo " local-data: '$UB_TXT_HOSTNAME. $UB_XTXT'"
|
|
echo
|
|
} >> $UB_HOST_CONF
|
|
|
|
|
|
if [ -n "$UB_LIST_NETW_WAN" ] ; then
|
|
for ifsubnet in $UB_LIST_NETW_WAN ; do
|
|
ifaddr=${ifsubnet#*@}
|
|
ifaddr=${ifaddr%/*}
|
|
ifarpa=$( host_ptr_any "$ifaddr" )
|
|
|
|
|
|
if [ -n "$ifarpa" ] ; then
|
|
if [ $UB_D_WAN_FQDN -gt 0 ] ; then
|
|
{
|
|
# Create a static zone for WAN host record only (singular)
|
|
echo " domain-insecure: $ifarpa"
|
|
echo " private-address: $ifaddr"
|
|
echo " local-zone: $ifarpa static"
|
|
echo " local-data: \"$ifarpa. $UB_XSOA\""
|
|
echo " local-data: \"$ifarpa. $UB_XNS\""
|
|
echo " local-data: '$ifarpa. $UB_MTXT'"
|
|
echo
|
|
} >> $UB_HOST_CONF
|
|
|
|
elif [ $zonetype -gt 0 ] ; then
|
|
{
|
|
echo " local-zone: $ifarpa transparent"
|
|
echo
|
|
} >> $UB_HOST_CONF
|
|
fi
|
|
fi
|
|
done
|
|
fi
|
|
|
|
|
|
if [ -n "$UB_LIST_NETW_LAN" ] ; then
|
|
for ifsubnet in $UB_LIST_NETW_LAN ; do
|
|
ifarpa=$( domain_ptr_any "${ifsubnet#*@}" )
|
|
|
|
|
|
if [ -n "$ifarpa" ] ; then
|
|
if [ $zonetype -eq 2 ] ; then
|
|
{
|
|
# Do NOT forward queries with your ip6.arpa or in-addr.arpa
|
|
echo " domain-insecure: $ifarpa"
|
|
echo " local-zone: $ifarpa static"
|
|
echo " local-data: \"$ifarpa. $UB_XSOA\""
|
|
echo " local-data: \"$ifarpa. $UB_XNS\""
|
|
echo " local-data: '$ifarpa. $UB_XTXT'"
|
|
echo
|
|
} >> $UB_HOST_CONF
|
|
|
|
elif [ $zonetype -eq 1 ] && [ $UB_D_PRIV_BLCK -eq 0 ] ; then
|
|
{
|
|
echo " local-zone: $ifarpa transparent"
|
|
echo
|
|
} >> $UB_HOST_CONF
|
|
fi
|
|
fi
|
|
done
|
|
fi
|
|
|
|
|
|
ulaprefix=$( uci_get network.@globals[0].ula_prefix )
|
|
ulaprefix=${ulaprefix%%:/*}
|
|
hostfqdn="$UB_TXT_HOSTNAME.$UB_TXT_DOMAIN"
|
|
|
|
|
|
if [ -z "$ulaprefix" ] ; then
|
|
# Nonsense so this option isn't globbed below
|
|
ulaprefix="fdno:such:addr::"
|
|
fi
|
|
|
|
|
|
if [ "$UB_LIST_NETW_LAN" ] && [ $UB_D_LAN_FQDN -gt 0 ] ; then
|
|
for ifsubnet in $UB_LIST_NETW_LAN ; do
|
|
ifaddr=${ifsubnet#*@}
|
|
ifaddr=${ifaddr%/*}
|
|
ifname=${ifsubnet%@*}
|
|
iffqdn="$ifname.$hostfqdn"
|
|
|
|
|
|
if [ $UB_D_LAN_FQDN -eq 4 ] ; then
|
|
names="$iffqdn $hostfqdn $UB_TXT_HOSTNAME"
|
|
ptrrec=" local-data-ptr: \"$ifaddr 300 $iffqdn\""
|
|
echo "$ptrrec" >> $UB_HOST_CONF
|
|
|
|
elif [ $UB_D_LAN_FQDN -eq 3 ] ; then
|
|
names="$hostfqdn $UB_TXT_HOSTNAME"
|
|
ptrrec=" local-data-ptr: \"$ifaddr 300 $hostfqdn\""
|
|
echo "$ptrrec" >> $UB_HOST_CONF
|
|
|
|
else
|
|
names="$UB_TXT_HOSTNAME"
|
|
ptrrec=" local-data-ptr: \"$ifaddr 300 $UB_TXT_HOSTNAME\""
|
|
echo "$ptrrec" >> $UB_HOST_CONF
|
|
fi
|
|
|
|
|
|
for name in $names ; do
|
|
case $ifaddr in
|
|
"${ulaprefix}"*)
|
|
# IP6 ULA only is assigned for OPTION 1
|
|
namerec=" local-data: \"$name. 300 IN AAAA $ifaddr\""
|
|
echo "$namerec" >> $UB_HOST_CONF
|
|
;;
|
|
|
|
[1-9]*.*[0-9])
|
|
namerec=" local-data: \"$name. 300 IN A $ifaddr\""
|
|
echo "$namerec" >> $UB_HOST_CONF
|
|
;;
|
|
|
|
*)
|
|
if [ $UB_D_LAN_FQDN -gt 1 ] ; then
|
|
# IP6 GLA is assigned for higher options
|
|
namerec=" local-data: \"$name. 300 IN AAAA $ifaddr\""
|
|
echo "$namerec" >> $UB_HOST_CONF
|
|
fi
|
|
;;
|
|
esac
|
|
done
|
|
echo >> $UB_HOST_CONF
|
|
done
|
|
fi
|
|
|
|
|
|
if [ -n "$UB_LIST_NETW_WAN" ] && [ $UB_D_WAN_FQDN -gt 0 ] ; then
|
|
for ifsubnet in $UB_LIST_NETW_WAN ; do
|
|
ifaddr=${ifsubnet#*@}
|
|
ifaddr=${ifaddr%/*}
|
|
ifname=${ifsubnet%@*}
|
|
iffqdn="$ifname.$hostfqdn"
|
|
|
|
|
|
if [ $UB_D_WAN_FQDN -eq 4 ] ; then
|
|
names="$iffqdn $hostfqdn $UB_TXT_HOSTNAME"
|
|
ptrrec=" local-data-ptr: \"$ifaddr 300 $iffqdn\""
|
|
echo "$ptrrec" >> $UB_HOST_CONF
|
|
|
|
elif [ $UB_D_WAN_FQDN -eq 3 ] ; then
|
|
names="$hostfqdn $UB_TXT_HOSTNAME"
|
|
ptrrec=" local-data-ptr: \"$ifaddr 300 $hostfqdn\""
|
|
echo "$ptrrec" >> $UB_HOST_CONF
|
|
|
|
else
|
|
names="$UB_TXT_HOSTNAME"
|
|
ptrrec=" local-data-ptr: \"$ifaddr 300 $UB_TXT_HOSTNAME\""
|
|
echo "$ptrrec" >> $UB_HOST_CONF
|
|
fi
|
|
|
|
|
|
for name in $names ; do
|
|
case $ifaddr in
|
|
"${ulaprefix}"*)
|
|
# IP6 ULA only is assigned for OPTION 1
|
|
namerec=" local-data: \"$name. 300 IN AAAA $ifaddr\""
|
|
echo "$namerec" >> $UB_HOST_CONF
|
|
;;
|
|
|
|
[1-9]*.*[0-9])
|
|
namerec=" local-data: \"$name. 300 IN A $ifaddr\""
|
|
echo "$namerec" >> $UB_HOST_CONF
|
|
;;
|
|
|
|
*)
|
|
if [ $UB_D_WAN_FQDN -gt 1 ] ; then
|
|
# IP6 GLA is assigned for higher options
|
|
namerec=" local-data: \"$name. 300 IN AAAA $ifaddr\""
|
|
echo "$namerec" >> $UB_HOST_CONF
|
|
fi
|
|
;;
|
|
esac
|
|
done
|
|
echo >> $UB_HOST_CONF
|
|
done
|
|
fi
|
|
fi # end if uci valid
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_uci() {
|
|
local cfg="$1"
|
|
local hostnm
|
|
|
|
hostnm=$( uci_get system.@system[0].hostname | awk '{print tolower($0)}' )
|
|
UB_TXT_HOSTNAME=${hostnm:-thisrouter}
|
|
|
|
config_get_bool UB_B_SLAAC6_MAC "$cfg" dhcp4_slaac6 0
|
|
config_get_bool UB_B_DNS64 "$cfg" dns64 0
|
|
config_get_bool UB_B_EXT_STATS "$cfg" extended_stats 0
|
|
config_get_bool UB_B_HIDE_BIND "$cfg" hide_binddata 1
|
|
config_get_bool UB_B_LOCL_SERV "$cfg" localservice 1
|
|
config_get_bool UB_B_MAN_CONF "$cfg" manual_conf 0
|
|
config_get_bool UB_B_QUERY_MIN "$cfg" query_minimize 0
|
|
config_get_bool UB_B_QRY_MINST "$cfg" query_min_strict 0
|
|
config_get_bool UB_B_AUTH_ROOT "$cfg" prefetch_root 0
|
|
config_get_bool UB_B_LOCL_BLCK "$cfg" rebind_localhost 0
|
|
config_get_bool UB_B_DNSSEC "$cfg" validator 0
|
|
config_get_bool UB_B_NTP_BOOT "$cfg" validator_ntp 1
|
|
config_get_bool UB_B_IF_AUTO "$cfg" interface_auto 1
|
|
|
|
config_get UB_IP_DNS64 "$cfg" dns64_prefix "64:ff9b::/96"
|
|
|
|
config_get UB_N_EDNS_SIZE "$cfg" edns_size 1232
|
|
config_get UB_N_RX_PORT "$cfg" listen_port 53
|
|
config_get UB_N_ROOT_AGE "$cfg" root_age 9
|
|
config_get UB_N_THREADS "$cfg" num_threads 1
|
|
config_get UB_N_RATE_LMT "$cfg" rate_limit 0
|
|
|
|
config_get UB_D_CONTROL "$cfg" unbound_control 0
|
|
config_get UB_D_DOMAIN_TYPE "$cfg" domain_type static
|
|
config_get UB_D_DHCP_LINK "$cfg" dhcp_link none
|
|
config_get UB_D_EXTRA_DNS "$cfg" add_extra_dns 0
|
|
config_get UB_D_LAN_FQDN "$cfg" add_local_fqdn 0
|
|
config_get UB_D_PRIV_BLCK "$cfg" rebind_protection 1
|
|
config_get UB_D_PROTOCOL "$cfg" protocol mixed
|
|
config_get UB_D_RECURSION "$cfg" recursion passive
|
|
config_get UB_D_RESOURCE "$cfg" resource small
|
|
config_get UB_D_VERBOSE "$cfg" verbosity 1
|
|
config_get UB_D_WAN_FQDN "$cfg" add_wan_fqdn 0
|
|
|
|
config_get UB_TTL_MIN "$cfg" ttl_min 120
|
|
config_get UB_TXT_DOMAIN "$cfg" domain lan
|
|
config_get UB_NEG_TTL_MAX "$cfg" ttl_neg_max 1000
|
|
|
|
config_list_foreach "$cfg" domain_insecure bundle_domain_insecure
|
|
config_list_foreach "$cfg" iface_lan bundle_lan_networks
|
|
config_list_foreach "$cfg" iface_wan bundle_wan_networks
|
|
|
|
if [ "$UB_D_DHCP_LINK" = "none" ] ; then
|
|
config_get_bool UB_B_DNSMASQ "$cfg" dnsmasq_link_dns 0
|
|
|
|
|
|
if [ $UB_B_DNSMASQ -gt 0 ] ; then
|
|
UB_D_DHCP_LINK=dnsmasq
|
|
|
|
|
|
if [ $UB_B_READY -eq 0 ] ; then
|
|
logger -t unbound -s "Please use 'dhcp_link' selector instead"
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
|
|
if [ "$UB_D_DHCP_LINK" = "dnsmasq" ] ; then
|
|
if [ ! -x /usr/sbin/dnsmasq ] || [ ! -x /etc/init.d/dnsmasq ] ; then
|
|
UB_D_DHCP_LINK=none
|
|
else
|
|
/etc/init.d/dnsmasq enabled || UB_D_DHCP_LINK=none
|
|
fi
|
|
|
|
|
|
if [ $UB_B_READY -eq 0 ] && [ "$UB_D_DHCP_LINK" = "none" ] ; then
|
|
logger -t unbound -s "cannot forward to dnsmasq"
|
|
fi
|
|
fi
|
|
|
|
|
|
if [ "$UB_D_DHCP_LINK" = "odhcpd" ] ; then
|
|
if [ ! -x /usr/sbin/odhcpd ] || [ ! -x /etc/init.d/odhcpd ] ; then
|
|
UB_D_DHCP_LINK=none
|
|
else
|
|
/etc/init.d/odhcpd enabled || UB_D_DHCP_LINK=none
|
|
fi
|
|
|
|
|
|
if [ $UB_B_READY -eq 0 ] && [ "$UB_D_DHCP_LINK" = "none" ] ; then
|
|
logger -t unbound -s "cannot receive records from odhcpd"
|
|
fi
|
|
fi
|
|
|
|
|
|
if [ $UB_N_EDNS_SIZE -lt 512 ] || [ 4096 -lt $UB_N_EDNS_SIZE ] ; then
|
|
logger -t unbound -s "edns_size exceeds range, using default"
|
|
UB_N_EDNS_SIZE=1232
|
|
fi
|
|
|
|
|
|
if [ $UB_N_RX_PORT -ne 53 ] \
|
|
&& { [ $UB_N_RX_PORT -lt 1024 ] || [ 10240 -lt $UB_N_RX_PORT ] ; } ; then
|
|
logger -t unbound -s "privileged port or in 5 digits, using default"
|
|
UB_N_RX_PORT=53
|
|
fi
|
|
|
|
|
|
if [ $UB_TTL_MIN -gt 1800 ] ; then
|
|
logger -t unbound -s "ttl_min could have had awful side effects, using 300"
|
|
UB_TTL_MIN=300
|
|
fi
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_include() {
|
|
local adb_enabled
|
|
local adb_files=$( ls $UB_VARDIR/adb_list.* 2>/dev/null )
|
|
|
|
echo "# $UB_TOTAL_CONF generated by UCI $( date -Is )" > $UB_TOTAL_CONF
|
|
|
|
|
|
if [ -f "$UB_CORE_CONF" ] ; then
|
|
# Yes this all looks busy, but it is in TMPFS. Working on separate files
|
|
# and piecing together is easier. UCI order is less constrained.
|
|
cat $UB_CORE_CONF >> $UB_TOTAL_CONF
|
|
rm $UB_CORE_CONF
|
|
fi
|
|
|
|
|
|
if [ -f "$UB_HOST_CONF" ] ; then
|
|
# UCI definitions of local host or local subnet
|
|
cat $UB_HOST_CONF >> $UB_TOTAL_CONF
|
|
rm $UB_HOST_CONF
|
|
fi
|
|
|
|
|
|
if [ -f $UB_SRVMASQ_CONF ] ; then
|
|
# UCI found link to dnsmasq
|
|
cat $UB_SRVMASQ_CONF >> $UB_TOTAL_CONF
|
|
rm $UB_SRVMASQ_CONF
|
|
fi
|
|
|
|
|
|
if [ -f "$UB_DHCP_CONF" ] ; then
|
|
{
|
|
# Seed DHCP records because dhcp scripts trigger externally
|
|
# Incremental Unbound restarts may drop unbound-control records
|
|
echo "include: $UB_DHCP_CONF"
|
|
echo
|
|
} >> $UB_TOTAL_CONF
|
|
fi
|
|
|
|
|
|
if [ -z "$adb_files" ] || [ ! -x /usr/bin/adblock.sh ] \
|
|
|| [ ! -x /etc/init.d/adblock ] ; then
|
|
adb_enabled=0
|
|
|
|
elif /etc/init.d/adblock enabled ; then
|
|
adb_enabled=1
|
|
{
|
|
# Pull in your selected openwrt/pacakges/net/adblock generated lists
|
|
echo "include: $UB_VARDIR/adb_list.*"
|
|
echo
|
|
} >> $UB_TOTAL_CONF
|
|
|
|
else
|
|
adb_enabled=0
|
|
fi
|
|
|
|
|
|
if [ -f $UB_SRV_CONF ] ; then
|
|
{
|
|
# Pull your own "server:" options here
|
|
echo "include: $UB_SRV_CONF"
|
|
echo
|
|
} >> $UB_TOTAL_CONF
|
|
fi
|
|
|
|
|
|
if [ -f "$UB_ZONE_CONF" ] ; then
|
|
# UCI defined forward, stub, and auth zones
|
|
cat $UB_ZONE_CONF >> $UB_TOTAL_CONF
|
|
rm $UB_ZONE_CONF
|
|
fi
|
|
|
|
|
|
if [ -f "$UB_CTRL_CONF" ] ; then
|
|
# UCI defined control application connection
|
|
cat $UB_CTRL_CONF >> $UB_TOTAL_CONF
|
|
rm $UB_CTRL_CONF
|
|
fi
|
|
|
|
|
|
if [ -f "$UB_EXTMASQ_CONF" ] ; then
|
|
# UCI found link to dnsmasq
|
|
cat $UB_EXTMASQ_CONF >> $UB_TOTAL_CONF
|
|
rm $UB_EXTMASQ_CONF
|
|
fi
|
|
|
|
|
|
if [ -f "$UB_EXT_CONF" ] ; then
|
|
{
|
|
# Pull your own extend feature clauses here
|
|
echo "include: $UB_EXT_CONF"
|
|
echo
|
|
} >> $UB_TOTAL_CONF
|
|
fi
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
resolv_setup() {
|
|
if [ "$UB_N_RX_PORT" != "53" ] ; then
|
|
# unbound is not the default on target resolver
|
|
echo "do nothing" >/dev/null
|
|
|
|
elif [ -x /etc/init.d/dnsmasq ] \
|
|
&& /etc/init.d/dnsmasq enabled \
|
|
&& nslookup localhost 127.0.0.1#53 >/dev/null 2>&1 ; then
|
|
# unbound is configured for port 53, but dnsmasq is enabled, and a resolver
|
|
# is already listening on port 53. Let dnsmasq manage resolve.conf.
|
|
# This also works to prevent clobbering while changing UCI.
|
|
echo "do nothing" >/dev/null
|
|
|
|
else
|
|
# unbound listens on 127.0.0.1#53 so set resolver file to local.
|
|
rm -f $UB_RESOLV_CONF
|
|
|
|
{
|
|
echo "# $UB_RESOLV_CONF generated by Unbound UCI $( date -Is )"
|
|
echo "nameserver 127.0.0.1"
|
|
echo "nameserver ::1"
|
|
echo "search $UB_TXT_DOMAIN."
|
|
} > $UB_RESOLV_CONF
|
|
fi
|
|
}
|
|
|
|
##############################################################################
|
|
|
|
unbound_start() {
|
|
# get interface subnets together
|
|
config_load network
|
|
config_foreach bundle_all_networks interface
|
|
|
|
# read Unbound UCI but pick through it later
|
|
config_load unbound
|
|
config_foreach unbound_uci unbound
|
|
unbound_mkdir
|
|
|
|
|
|
if [ $UB_B_MAN_CONF -eq 0 ] ; then
|
|
# iterate zones before we load other UCI
|
|
# forward-zone: auth-zone: and stub-zone:
|
|
config_foreach unbound_zone zone
|
|
# associate potential DNS RR with interfaces
|
|
config_load dhcp
|
|
config_foreach bundle_dhcp_networks dhcp
|
|
# server:
|
|
unbound_conf
|
|
unbound_hostname
|
|
# control:
|
|
unbound_control
|
|
# dnsmasq
|
|
dnsmasq_link
|
|
# merge
|
|
unbound_include
|
|
fi
|
|
|
|
|
|
resolv_setup
|
|
}
|
|
|
|
##############################################################################
|
|
|