Unbound: bug fix odhcpd and add auto adblock
Bug fix dhcp4_slaac6 option was adding to all IP6 routes. Filtering was added to this process to only include addresses served from "this dhcp interface." adblock 2.3.0 file output is now detected and automatically integrated into Unbound local-zones. adblock deposites its block site zone-files into /var/lib/unbound. If this is not desired, then disable adblock or reconfigure to avoid Unbound. Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>
This commit is contained in:
Eric Luehrsen
parent
3c5937d60f
commit
c43d48e313
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
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PKG_NAME:=unbound
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PKG_VERSION:=1.6.0
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PKG_RELEASE:=3
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PKG_RELEASE:=4
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PKG_LICENSE:=BSD-3-Clause
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PKG_LICENSE_FILES:=LICENSE
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@ -27,7 +27,7 @@ PKG_INSTALL:=1
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include $(INCLUDE_DIR)/package.mk
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define Package/unbound/Default
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TITLE:=Unbound is a validating, recursive, and caching DNS resolver.
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TITLE:=Validating Recursive DNS Server
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URL:=http://www.unbound.net/
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DEPENDS:=+libopenssl
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endef
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@ -51,7 +51,7 @@ define Package/unbound-anchor
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SECTION:=net
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CATEGORY:=Network
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SUBMENU:=IP Addresses and Names
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TITLE+= (anchor utility)
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TITLE+= (DSKEY utility)
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DEPENDS+= +unbound +libexpat
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endef
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@ -77,7 +77,7 @@ define Package/unbound-control-setup
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SECTION:=net
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CATEGORY:=Network
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SUBMENU:=IP Addresses and Names
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TITLE+= (control setup utility)
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TITLE+= (control setup)
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DEPENDS+= +unbound-control +openssl-util
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endef
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@ -90,7 +90,7 @@ define Package/unbound-host
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SECTION:=net
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CATEGORY:=Network
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SUBMENU:=IP Addresses and Names
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TITLE+= (DNS lookup utility)
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TITLE+= (lookup utility)
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DEPENDS+= +libunbound
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endef
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@ -8,6 +8,9 @@ Unbound may be useful on consumer grade embedded hardware. It is *intended* to b
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This package builds on Unbounds capabilities with OpenWrt UCI. Not every Unbound option is in UCI, but rather, UCI simplifies the combination of related options. Unbounds native options are bundled and balanced within a smaller set of choices. Options include resources, DNSSEC, access control, and some TTL tweaking. The UCI also provides an escape option and work at the raw "unbound.conf" level.
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## Adblocking
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The UCI scripts will work with OpenWrt/pacakages/net/adblock (2.3.0 and above) if it is installed and enabled. Its all detected and integrated automatically. In brief, the adblock scripts create distinct local-zone files that are simply included in the unbound conf file during UCI generation. If you don't want this, then disable adblock or reconfigure adblock to not send these files to Unbound.
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## HOW TO Integrate with DHCP
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Some UCI options and scripts help Unbound to work with DHCP servers to load the local DNS. The examples provided here are serial dnsmasq-unbound, parallel dnsmasq-unbound, and unbound scripted with odhcpd.
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@ -29,7 +32,8 @@ In this case, dnsmasq is not changed *much* with respect to the default OpenWRT/
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**/etc/config/dhcp**:
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config dnsmasq
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option noresolv '0'
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option domain 'yourdomain'
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option noresolv '1'
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option resolvfile '/tmp/resolv.conf.auto'
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option port '53'
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list server '127.0.0.1#1053'
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@ -56,13 +60,12 @@ In this case, Unbound serves your local network directly for all purposes. It wi
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...
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config dhcp 'lan'
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# dnsmasq may not issue DNS option if not std. configuration
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list dhcp_option 'option:dns-server,0.0.0.0'
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...
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### Only odhcpd
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Why use dnsmasq you might ask? Well test, try, and review. You can have Unbound and odhcpd only. When odhcpd configures as DHCP lease, it will call a script. The script provided with Unbound will read the lease file and enter DHCP-DNS records as much as dnsmasq once did.
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*note: You must install unbound-control. The lease file loads are done without starting, stopping, or re-writing conf files.*
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Why use dnsmasq you might ask? Well test, try, and review. You can have Unbound and odhcpd only. When odhcpd configures each DHCP lease, it will call a script. The script provided with Unbound will read the lease file and enter DHCP-DNS records as much as dnsmasq once did. You **must install** `unbound-control`, because the lease records are added and removed without starting, stopping, flushing cache, or re-writing conf files.
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*note: if you run the default LEDE/OpenWrt setup with dnsmasq and odhcpd, then use the link to dnsmasq. Unbound will pole dnsmasq. dnsmasq merges its lease file and odhcpd lease file.*
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@ -74,7 +74,8 @@
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while ( ( cmd | getline adr ) > 0 ) {
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if ( substr( adr, 1, 5 ) <= "fd00:" ) {
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if (( substr( adr, 1, 5 ) <= "fd00:" ) \
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&& ( index( adr, "via" ) == 0 )) {
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# GA or ULA routed addresses only (not LL or MC)
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sub( /\/.*/, "", adr ) ;
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adr = ( adr slaac ) ;
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@ -136,10 +136,10 @@ create_interface_dns() {
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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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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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@ -164,10 +164,10 @@ create_interface_dns() {
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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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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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@ -308,7 +308,7 @@ unbound_control() {
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{
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# Amend your own extended clauses here like forward zones or disable
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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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@ -645,14 +645,37 @@ unbound_access() {
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{
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# Amend your own "server:" stuff here
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echo
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echo "include: $UNBOUND_SRV_CONF"
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echo " include: $UNBOUND_SRV_CONF"
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echo
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} >> $UNBOUND_CONFFILE
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}
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##############################################################################
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unbound_adblock() {
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# TODO: Unbound 1.6.0 added "tags" and "views"; lets work with adblock team
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local adb_enabled adb_file
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if [ ! -x /usr/bin/adblock.sh -o ! -x /etc/init.d/adblock ] ; then
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adb_enabled=0
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else
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/etc/init.d/adblock enabled && adb_enabled=1 || adb_enabled=0
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fi
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if [ "$adb_enabled" -gt 0 ] ; then
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{
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# Pull in your selected openwrt/pacakges/net/adblock generated lists
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for adb_file in $UNBOUND_VARDIR/adb_list.* ; do
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echo " include: $adb_file"
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done
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echo
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} >> $UNBOUND_CONFFILE
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fi
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}
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##############################################################################
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unbound_hostname() {
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if [ -n "$UNBOUND_TXT_DOMAIN" ] ; then
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{
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@ -799,6 +822,7 @@ unbound_start() {
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if [ "$UNBOUND_B_MAN_CONF" -eq 0 ] ; then
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unbound_conf
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unbound_access
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unbound_adblock
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if [ "$UNBOUND_D_DHCP_LINK" = "dnsmasq" ] ; then
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dnsmasq_link
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