2 ##############################################################################
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License version 2 as
6 # published by the Free Software Foundation.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # Copyright (C) 2016 Eric Luehrsen
15 ##############################################################################
17 # This builds the basic UCI components currently supported for Unbound. It is
18 # intentionally NOT comprehensive and bundles a lot of options. The UCI is to
19 # be a simpler presentation of the total Unbound conf set.
21 ##############################################################################
24 UNBOUND_B_SLAAC6_MAC
=0
37 UNBOUND_D_DOMAIN_TYPE
=static
38 UNBOUND_D_DHCP_LINK
=none
40 UNBOUND_D_PROTOCOL
=mixed
41 UNBOUND_D_RESOURCE
=small
42 UNBOUND_D_RECURSION
=passive
45 UNBOUND_IP_DNS64
="64:ff9b::/96"
47 UNBOUND_N_EDNS_SIZE
=1280
48 UNBOUND_N_FWD_PORTS
=""
54 UNBOUND_TXT_DOMAIN
=lan
55 UNBOUND_TXT_FWD_ZONE
=""
56 UNBOUND_TXT_HOSTNAME
=thisrouter
58 ##############################################################################
60 UNBOUND_LIBDIR
=/usr
/lib
/unbound
61 UNBOUND_VARDIR
=/var
/lib
/unbound
63 UNBOUND_PIDFILE
=/var
/run
/unbound.pid
65 UNBOUND_SRV_CONF
=$UNBOUND_VARDIR/unbound_srv.conf
66 UNBOUND_EXT_CONF
=$UNBOUND_VARDIR/unbound_ext.conf
67 UNBOUND_DHCP_CONF
=$UNBOUND_VARDIR/unbound_dhcp.conf
68 UNBOUND_CONFFILE
=$UNBOUND_VARDIR/unbound.conf
70 UNBOUND_KEYFILE
=$UNBOUND_VARDIR/root.key
71 UNBOUND_HINTFILE
=$UNBOUND_VARDIR/root.hints
72 UNBOUND_TIMEFILE
=$UNBOUND_VARDIR/unbound.
time
74 ##############################################################################
76 UNBOUND_ANCHOR
=/usr
/sbin
/unbound-anchor
77 UNBOUND_CONTROL
=/usr
/sbin
/unbound-control
78 UNBOUND_CONTROL_CFG
="$UNBOUND_CONTROL -c $UNBOUND_CONFFILE"
80 ##############################################################################
83 .
/lib
/functions
/network.sh
85 .
$UNBOUND_LIBDIR/dnsmasq.sh
86 .
$UNBOUND_LIBDIR/iptools.sh
87 .
$UNBOUND_LIBDIR/rootzone.sh
89 ##############################################################################
91 create_interface_dns
() {
93 local ipcommand logint ignore ifname ifdashname
94 local name names address addresses
95 local ulaprefix if_fqdn host_fqdn mode mode_ptr
97 # Create local-data: references for this hosts interfaces (router).
98 config_get logint
"$cfg" interface
99 config_get_bool ignore
"$cfg" ignore
0
100 network_get_device ifname
"$cfg"
102 ifdashname
="${ifname//./-}"
103 ipcommand
="ip -o address show $ifname"
104 addresses
="$($ipcommand | awk '/inet/{sub(/\/.*/,"",$4); print $4}')"
105 ulaprefix
="$(uci_get network @globals[0] ula_prefix)"
106 host_fqdn
="$UNBOUND_TXT_HOSTNAME.$UNBOUND_TXT_DOMAIN"
107 if_fqdn
="$ifdashname.$host_fqdn"
110 if [ -z "${ulaprefix%%:/*}" ] ; then
111 # Nonsense so this option isn't globbed below
112 ulaprefix
="fdno:such:addr::/48"
116 if [ "$ignore" -gt 0 ] ; then
117 mode
="$UNBOUND_D_WAN_FQDN"
120 mode
="$UNBOUND_D_LAN_FQDN"
126 mode_ptr
="$host_fqdn"
127 names
="$host_fqdn $UNBOUND_TXT_HOSTNAME"
132 names
="$if_fqdn $host_fqdn $UNBOUND_TXT_HOSTNAME"
136 mode_ptr
="$UNBOUND_TXT_HOSTNAME"
137 names
="$UNBOUND_TXT_HOSTNAME"
142 if [ "$mode" -gt 1 ] ; then
144 for address
in $addresses ; do
147 echo " # note link address $address"
151 # GA and ULA IP6 for HOST IN AAA records (ip command is robust)
152 for name
in $names ; do
153 echo " local-data: \"$name. 120 IN AAAA $address\""
155 echo " local-data-ptr: \"$address 120 $mode_ptr\""
159 # Old fashioned HOST IN A records
160 for name
in $names ; do
161 echo " local-data: \"$name. 120 IN A $address\""
163 echo " local-data-ptr: \"$address 120 $mode_ptr\""
168 } >> $UNBOUND_CONFFILE
170 elif [ "$mode" -gt 0 ] ; then
172 for address
in $addresses ; do
175 echo " # note link address $address"
178 "${ulaprefix%%:/*}"*)
179 # Only this networks ULA and only hostname
180 echo " local-data: \"$UNBOUND_TXT_HOSTNAME. 120 IN AAAA $address\""
181 echo " local-data-ptr: \"$address 120 $UNBOUND_TXT_HOSTNAME\""
185 echo " local-data: \"$UNBOUND_TXT_HOSTNAME. 120 IN A $address\""
186 echo " local-data-ptr: \"$address 120 $UNBOUND_TXT_HOSTNAME\""
191 } >> $UNBOUND_CONFFILE
195 ##############################################################################
197 create_access_control
() {
199 local subnets subnets4 subnets6
200 local validip4 validip6
202 network_get_subnets subnets4
"$cfg"
203 network_get_subnets6 subnets6
"$cfg"
204 subnets
="$subnets4 $subnets6"
207 if [ -n "$subnets" ] ; then
208 for subnet
in $subnets ; do
209 validip4
=$
( valid_subnet4
$subnet )
210 validip6
=$
( valid_subnet6
$subnet )
213 if [ "$validip4" = "ok" -o "$validip6" = "ok" ] ; then
214 # For each "network" UCI add "access-control:" white list for queries
215 echo " access-control: $subnet allow" >> $UNBOUND_CONFFILE
221 ##############################################################################
223 create_domain_insecure
() {
224 echo " domain-insecure: \"$1\"" >> $UNBOUND_CONFFILE
227 ##############################################################################
231 local dhcp_origin
=$
( uci get dhcp.@odhcpd
[0].leasefile
)
232 local dhcp_dir
=$
( dirname "$dhcp_origin" )
235 if [ ! -x /usr
/sbin
/dnsmasq
-o ! -x /etc
/init.d
/dnsmasq
] ; then
238 /etc
/init.d
/dnsmasq enabled || resolvsym
=1
242 if [ "$resolvsym" -gt 0 ] ; then
243 rm -f /tmp
/resolv.conf
247 # Set resolver file to local but not if /etc/init.d/dnsmasq will do it.
248 echo "nameserver 127.0.0.1"
249 echo "nameserver ::1"
250 echo "search $UNBOUND_TXT_DOMAIN"
255 if [ "$UNBOUND_D_DHCP_LINK" = "odhcpd" -a ! -d "$dhcp_dir" ] ; then
256 # make sure odhcpd has a directory to write (not done itself, yet)
261 if [ -f $UNBOUND_KEYFILE ] ; then
262 # Lets not lose RFC 5011 tracking if we don't have to
263 cp -p $UNBOUND_KEYFILE $UNBOUND_KEYFILE.keep
267 # Blind copy /etc/ to /var/lib/
268 mkdir
-p $UNBOUND_VARDIR
269 rm -f $UNBOUND_VARDIR/dhcp_
*
270 touch $UNBOUND_CONFFILE
271 touch $UNBOUND_SRV_CONF
272 touch $UNBOUND_EXT_CONF
273 cp -p /etc
/unbound
/* $UNBOUND_VARDIR/
276 if [ ! -f $UNBOUND_HINTFILE ] ; then
277 if [ -f /usr
/share
/dns
/root.hints
] ; then
278 # Debian-like package dns-root-data
279 cp -p /usr
/share
/dns
/root.hints
$UNBOUND_HINTFILE
282 logger
-t unbound
-s "iterator will use built-in root hints"
287 if [ ! -f $UNBOUND_KEYFILE ] ; then
288 if [ -f /usr
/share
/dns
/root.key
] ; then
289 # Debian-like package dns-root-data
290 cp -p /usr
/share
/dns
/root.key
$UNBOUND_KEYFILE
292 elif [ -x $UNBOUND_ANCHOR ] ; then
293 $UNBOUND_ANCHOR -a $UNBOUND_KEYFILE
296 logger
-t unbound
-s "validator will use built-in trust anchor"
301 if [ -f $UNBOUND_KEYFILE.keep
] ; then
302 # root.key.keep is reused if newest
303 cp -u $UNBOUND_KEYFILE.keep
$UNBOUND_KEYFILE
304 rm -f $UNBOUND_KEYFILE.keep
308 # Ensure access and prepare to jail
309 chown
-R unbound
:unbound
$UNBOUND_VARDIR
310 chmod 775 $UNBOUND_VARDIR
311 chmod 664 $UNBOUND_VARDIR/*
314 ##############################################################################
317 if [ "$UNBOUND_B_CONTROL" -gt 0 ] ; then
319 # Enable remote control tool, but only at local host for security
320 # You can hand write fancier encrypted access with /etc/..._ext.conf
321 echo "remote-control:"
322 echo " control-enable: yes"
323 echo " control-use-cert: no"
324 echo " control-interface: 127.0.0.1"
325 echo " control-interface: ::1"
327 } >> $UNBOUND_CONFFILE
332 # Amend your own extended clauses here like forward zones or disable
333 # above (local, no encryption) and amend your own remote encrypted control
335 echo "include: $UNBOUND_EXT_CONF" >> $UNBOUND_CONFFILE
337 } >> $UNBOUND_CONFFILE
340 ##############################################################################
344 local rt_mem rt_conn modulestring
348 # Make fresh conf file
349 echo "# $UNBOUND_CONFFILE generated by UCI $( date )"
351 } > $UNBOUND_CONFFILE
357 echo " username: unbound"
358 echo " num-threads: 1"
359 echo " msg-cache-slabs: 1"
360 echo " rrset-cache-slabs: 1"
361 echo " infra-cache-slabs: 1"
362 echo " key-cache-slabs: 1"
364 } >> $UNBOUND_CONFFILE
370 echo " statistics-interval: 0"
371 echo " statistics-cumulative: no"
372 echo " extended-statistics: no"
374 } >> $UNBOUND_CONFFILE
378 # Interfaces (access contol "option local_service")
379 echo " interface: 0.0.0.0"
380 echo " interface: ::0"
381 echo " outgoing-interface: 0.0.0.0"
382 echo " outgoing-interface: ::0"
384 } >> $UNBOUND_CONFFILE
387 case "$UNBOUND_D_PROTOCOL" in
392 } >> $UNBOUND_CONFFILE
399 } >> $UNBOUND_CONFFILE
406 echo " prefer-ip6: yes"
407 } >> $UNBOUND_CONFFILE
414 } >> $UNBOUND_CONFFILE
420 # protocol level tuning
421 echo " edns-buffer-size: $UNBOUND_N_EDNS_SIZE"
422 echo " msg-buffer-size: 8192"
423 echo " port: $UNBOUND_N_RX_PORT"
424 echo " outgoing-port-permit: 10240-65535"
426 } >> $UNBOUND_CONFFILE
430 # Other harding and options for an embedded router
431 echo " harden-short-bufsize: yes"
432 echo " harden-large-queries: yes"
433 echo " harden-glue: yes"
434 echo " harden-below-nxdomain: no"
435 echo " harden-referral-path: no"
436 echo " use-caps-for-id: no"
438 } >> $UNBOUND_CONFFILE
443 echo " use-syslog: yes"
444 echo " chroot: \"$UNBOUND_VARDIR\""
445 echo " directory: \"$UNBOUND_VARDIR\""
446 echo " pidfile: \"$UNBOUND_PIDFILE\""
447 } >> $UNBOUND_CONFFILE
450 if [ -f "$UNBOUND_HINTFILE" ] ; then
451 # Optional hints if found
452 echo " root-hints: \"$UNBOUND_HINTFILE\"" >> $UNBOUND_CONFFILE
456 if [ "$UNBOUND_B_DNSSEC" -gt 0 -a -f "$UNBOUND_KEYFILE" ] ; then
458 echo " auto-trust-anchor-file: \"$UNBOUND_KEYFILE\""
460 } >> $UNBOUND_CONFFILE
463 echo >> $UNBOUND_CONFFILE
467 case "$UNBOUND_D_RESOURCE" in
468 # Tiny - Unbound's recommended cheap hardware config
469 tiny
) rt_mem
=1 ; rt_conn
=1 ;;
470 # Small - Half RRCACHE and open ports
471 small
) rt_mem
=8 ; rt_conn
=5 ;;
472 # Medium - Nearly default but with some added balancintg
473 medium
) rt_mem
=16 ; rt_conn
=10 ;;
474 # Large - Double medium
475 large
) rt_mem
=32 ; rt_conn
=10 ;;
476 # Whatever unbound does
477 *) rt_mem
=0 ; rt_conn
=0 ;;
481 if [ "$rt_mem" -gt 0 ] ; then
483 # Set memory sizing parameters
484 echo " outgoing-range: $(($rt_conn*64))"
485 echo " num-queries-per-thread: $(($rt_conn*32))"
486 echo " outgoing-num-tcp: $(($rt_conn))"
487 echo " incoming-num-tcp: $(($rt_conn))"
488 echo " rrset-cache-size: $(($rt_mem*256))k"
489 echo " msg-cache-size: $(($rt_mem*128))k"
490 echo " key-cache-size: $(($rt_mem*128))k"
491 echo " neg-cache-size: $(($rt_mem*64))k"
492 echo " infra-cache-numhosts: $(($rt_mem*256))"
494 } >> $UNBOUND_CONFFILE
497 logger
-t unbound
-s "default memory resource consumption"
500 # Assembly of module-config: options is tricky; order matters
501 modulestring
="iterator"
504 if [ "$UNBOUND_B_DNSSEC" -gt 0 ] ; then
505 if [ ! -f "$UNBOUND_TIMEFILE" -a "$UNBOUND_B_NTP_BOOT" -gt 0 ] ; then
506 # DNSSEC chicken and egg with getting NTP time
507 echo " val-override-date: -1" >> $UNBOUND_CONFFILE
512 echo " harden-dnssec-stripped: yes"
513 echo " val-clean-additional: yes"
514 echo " ignore-cd-flag: yes"
515 } >> $UNBOUND_CONFFILE
518 modulestring
="validator $modulestring"
522 if [ "$UNBOUND_B_DNS64" -gt 0 ] ; then
523 echo " dns64-prefix: $UNBOUND_IP_DNS64" >> $UNBOUND_CONFFILE
525 modulestring
="dns64 $modulestring"
530 # Print final module string
531 echo " module-config: \"$modulestring\""
533 } >> $UNBOUND_CONFFILE
536 if [ "$UNBOUND_B_QRY_MINST" -gt 0 -a "$UNBOUND_B_QUERY_MIN" -gt 0 ] ; then
538 # Some query privacy but "strict" will break some name servers
539 echo " qname-minimisation: yes"
540 echo " qname-minimisation-strict: yes"
541 } >> $UNBOUND_CONFFILE
543 elif [ "$UNBOUND_B_QUERY_MIN" -gt 0 ] ; then
544 # Minor improvement on query privacy
545 echo " qname-minimisation: yes" >> $UNBOUND_CONFFILE
548 echo " qname-minimisation: no" >> $UNBOUND_CONFFILE
552 case "$UNBOUND_D_RECURSION" in
556 echo " prefetch-key: no"
557 echo " target-fetch-policy: \"0 0 0 0 0\""
559 } >> $UNBOUND_CONFFILE
564 echo " prefetch: yes"
565 echo " prefetch-key: yes"
566 echo " target-fetch-policy: \"3 2 1 0 0\""
568 } >> $UNBOUND_CONFFILE
572 logger
-t unbound
-s "default recursion configuration"
578 # Reload records more than 10 hours old
579 # DNSSEC 5 minute bogus cool down before retry
580 # Adaptive infrastructure info kept for 15 minutes
581 echo " cache-min-ttl: $UNBOUND_TTL_MIN"
582 echo " cache-max-ttl: 36000"
583 echo " val-bogus-ttl: 300"
584 echo " infra-host-ttl: 900"
586 } >> $UNBOUND_CONFFILE
589 if [ "$UNBOUND_B_HIDE_BIND" -gt 0 ] ; then
591 # Block server id and version DNS TXT records
592 echo " hide-identity: yes"
593 echo " hide-version: yes"
595 } >> $UNBOUND_CONFFILE
599 if [ "$UNBOUND_B_PRIV_BLCK" -gt 0 ] ; then
601 # Remove _upstream_ or global reponses with private addresses.
602 # Unbounds own "local zone" and "forward zone" may still use these.
603 # RFC1918, RFC3927, RFC4291, RFC6598, RFC6890
604 echo " private-address: 10.0.0.0/8"
605 echo " private-address: 100.64.0.0/10"
606 echo " private-address: 169.254.0.0/16"
607 echo " private-address: 172.16.0.0/12"
608 echo " private-address: 192.168.0.0/16"
609 echo " private-address: fc00::/8"
610 echo " private-address: fd00::/8"
611 echo " private-address: fe80::/10"
612 } >> $UNBOUND_CONFFILE
616 if [ "$UNBOUND_B_LOCL_BLCK" -gt 0 ] ; then
618 # Remove DNS reponses from upstream with loopback IP
619 # Black hole DNS method for ad blocking, so consider...
620 echo " private-address: 127.0.0.0/8"
621 echo " private-address: ::1/128"
623 } >> $UNBOUND_CONFFILE
626 echo >> $UNBOUND_CONFFILE
630 # Except and accept domains as insecure (DNSSEC); work around broken domains
631 config_list_foreach
"$cfg" "domain_insecure" create_domain_insecure
632 echo >> $UNBOUND_CONFFILE
635 ##############################################################################
638 # TODO: Unbound 1.6.0 added "tags" and "views", so we can add tags to
639 # each access-control IP block, and then divert access.
640 # -- "guest" WIFI will not be allowed to see local zone data
641 # -- "child" LAN can black whole a list of domains to http~deadpixel
644 if [ "$UNBOUND_B_LOCL_SERV" -gt 0 ] ; then
645 # Only respond to queries from which this device has an interface.
646 # Prevent DNS amplification attacks by not responding to the universe.
648 config_foreach create_access_control interface
652 echo " access-control: 127.0.0.0/8 allow"
653 echo " access-control: ::1/128 allow"
654 echo " access-control: fe80::/10 allow"
656 } >> $UNBOUND_CONFFILE
660 echo " access-control: 0.0.0.0/0 allow"
661 echo " access-control: ::0/0 allow"
663 } >> $UNBOUND_CONFFILE
668 # Amend your own "server:" stuff here
669 echo " include: $UNBOUND_SRV_CONF"
671 } >> $UNBOUND_CONFFILE
674 ##############################################################################
677 # TODO: Unbound 1.6.0 added "tags" and "views"; lets work with adblock team
678 local adb_enabled adb_file
680 if [ ! -x /usr
/bin
/adblock.sh
-o ! -x /etc
/init.d
/adblock
] ; then
683 /etc
/init.d
/adblock enabled
&& adb_enabled
=1 || adb_enabled
=0
687 if [ "$adb_enabled" -gt 0 ] ; then
689 # Pull in your selected openwrt/pacakges/net/adblock generated lists
690 for adb_file
in $UNBOUND_VARDIR/adb_list.
* ; do
691 echo " include: $adb_file"
694 } >> $UNBOUND_CONFFILE
698 ##############################################################################
701 if [ -n "$UNBOUND_TXT_DOMAIN" ] ; then
703 # TODO: Unbound 1.6.0 added "tags" and "views" and we could make
704 # domains by interface to prevent DNS from "guest" to "home"
705 echo " local-zone: $UNBOUND_TXT_DOMAIN. $UNBOUND_D_DOMAIN_TYPE"
706 echo " domain-insecure: $UNBOUND_TXT_DOMAIN"
707 echo " private-domain: $UNBOUND_TXT_DOMAIN"
709 echo " local-zone: $UNBOUND_TXT_HOSTNAME. $UNBOUND_D_DOMAIN_TYPE"
710 echo " domain-insecure: $UNBOUND_TXT_HOSTNAME"
711 echo " private-domain: $UNBOUND_TXT_HOSTNAME"
713 } >> $UNBOUND_CONFFILE
716 case "$UNBOUND_D_DOMAIN_TYPE" in
717 deny|inform_deny|refuse|static
)
719 # avoid upstream involvement in RFC6762 like responses (link only)
720 echo " local-zone: local. $UNBOUND_D_DOMAIN_TYPE"
721 echo " domain-insecure: local"
722 echo " private-domain: local"
724 } >> $UNBOUND_CONFFILE
729 if [ "$UNBOUND_D_LAN_FQDN" -gt 0 -o "$UNBOUND_D_WAN_FQDN" -gt 0 ] ; then
731 config_foreach create_interface_dns dhcp
735 if [ -f "$UNBOUND_DHCP_CONF" ] ; then
737 # Seed DHCP records because dhcp scripts trigger externally
738 # Incremental Unbound restarts may drop unbound-control add records
739 echo " include: $UNBOUND_DHCP_CONF"
741 } >> $UNBOUND_CONFFILE
746 ##############################################################################
750 local dnsmasqpath hostnm
752 hostnm
="$(uci_get system.@system[0].hostname | awk '{print tolower($0)}')"
753 UNBOUND_TXT_HOSTNAME
=${hostnm:-thisrouter}
755 config_get_bool UNBOUND_B_SLAAC6_MAC
"$cfg" dhcp4_slaac6
0
756 config_get_bool UNBOUND_B_DNS64
"$cfg" dns64
0
757 config_get_bool UNBOUND_B_HIDE_BIND
"$cfg" hide_binddata
1
758 config_get_bool UNBOUND_B_LOCL_SERV
"$cfg" localservice
1
759 config_get_bool UNBOUND_B_MAN_CONF
"$cfg" manual_conf
0
760 config_get_bool UNBOUND_B_QUERY_MIN
"$cfg" query_minimize
0
761 config_get_bool UNBOUND_B_QRY_MINST
"$cfg" query_min_strict
0
762 config_get_bool UNBOUND_B_PRIV_BLCK
"$cfg" rebind_protection
1
763 config_get_bool UNBOUND_B_LOCL_BLCK
"$cfg" rebind_localhost
0
764 config_get_bool UNBOUND_B_CONTROL
"$cfg" unbound_control
0
765 config_get_bool UNBOUND_B_DNSSEC
"$cfg" validator
0
766 config_get_bool UNBOUND_B_NTP_BOOT
"$cfg" validator_ntp
1
768 config_get UNBOUND_IP_DNS64
"$cfg" dns64_prefix
"64:ff9b::/96"
770 config_get UNBOUND_N_EDNS_SIZE
"$cfg" edns_size
1280
771 config_get UNBOUND_N_RX_PORT
"$cfg" listen_port
53
772 config_get UNBOUND_N_ROOT_AGE
"$cfg" root_age
9
774 config_get UNBOUND_D_DOMAIN_TYPE
"$cfg" domain_type static
775 config_get UNBOUND_D_DHCP_LINK
"$cfg" dhcp_link none
776 config_get UNBOUND_D_LAN_FQDN
"$cfg" add_local_fqdn
0
777 config_get UNBOUND_D_PROTOCOL
"$cfg" protocol mixed
778 config_get UNBOUND_D_RECURSION
"$cfg" recursion passive
779 config_get UNBOUND_D_RESOURCE
"$cfg" resource small
780 config_get UNBOUND_D_WAN_FQDN
"$cfg" add_wan_fqdn
0
782 config_get UNBOUND_TTL_MIN
"$cfg" ttl_min
120
783 config_get UNBOUND_TXT_DOMAIN
"$cfg" domain lan
786 if [ "$UNBOUND_D_DHCP_LINK" = "none" ] ; then
787 config_get_bool UNBOUND_B_DNSMASQ
"$cfg" dnsmasq_link_dns
0
790 if [ "$UNBOUND_B_DNSMASQ" -gt 0 ] ; then
791 UNBOUND_D_DHCP_LINK
=dnsmasq
792 logger
-t unbound
-s "Please use 'dhcp_link' selector instead"
797 if [ "$UNBOUND_D_DHCP_LINK" = "dnsmasq" ] ; then
798 if [ ! -x /usr
/sbin
/dnsmasq
-o ! -x /etc
/init.d
/dnsmasq
] ; then
799 UNBOUND_D_DHCP_LINK
=none
801 /etc
/init.d
/dnsmasq enabled || UNBOUND_D_DHCP_LINK
=none
805 if [ "$UNBOUND_D_DHCP_LINK" = "none" ] ; then
806 logger
-t unbound
-s "cannot forward to dnsmasq"
811 if [ "$UNBOUND_D_DHCP_LINK" = "odhcpd" ] ; then
812 if [ ! -x /usr
/sbin
/odhcpd
-o ! -x /etc
/init.d
/odhcpd
] ; then
813 UNBOUND_D_DHCP_LINK
=none
815 /etc
/init.d
/odhcpd enabled || UNBOUND_D_DHCP_LINK
=none
819 if [ "$UNBOUND_D_DHCP_LINK" = "none" ] ; then
820 logger
-t unbound
-s "cannot receive records from odhcpd"
825 if [ "$UNBOUND_N_EDNS_SIZE" -lt 512 \
826 -o 4096 -lt "$UNBOUND_N_EDNS_SIZE" ] ; then
827 # exceeds range, back to default
828 UNBOUND_N_EDNS_SIZE
=1280
832 if [ "$UNBOUND_N_RX_PORT" -lt 1024 \
833 -o 10240 -lt "$UNBOUND_N_RX_PORT" ] ; then
834 # special port or in 5 digits, back to default
839 if [ "$UNBOUND_TTL_MIN" -gt 1800 ] ; then
840 # that could have had awful side effects
845 ##############################################################################
849 config_foreach unbound_uci unbound
853 if [ "$UNBOUND_B_MAN_CONF" -eq 0 ] ; then
858 if [ "$UNBOUND_D_DHCP_LINK" = "dnsmasq" ] ; then
868 ##############################################################################
876 if [ ! -x /usr
/sbin
/dnsmasq
-o ! -x /etc
/init.d
/dnsmasq
] ; then
879 /etc
/init.d
/dnsmasq enabled || resolvsym
=1
883 if [ "$resolvsym" -gt 0 ] ; then
884 # set resolver file to normal, but don't stomp on dnsmasq
885 rm -f /tmp
/resolv.conf
886 ln -s /tmp
/resolv.conf.auto
/tmp
/resolv.conf
890 # Unbound has a log dump which takes time; don't overlap a "restart"
894 ##############################################################################