1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2007-2012 OpenWrt.org
14 BASECONFIGFILE
="/var/etc/dnsmasq.conf"
15 BASEHOSTFILE
="/tmp/hosts/dhcp"
16 TRUSTANCHORSFILE
="/usr/share/dnsmasq/trust-anchors.conf"
17 TIMEVALIDFILE
="/var/state/dnsmasqsec"
18 BASEDHCPSTAMPFILE
="/var/run/dnsmasq"
19 DHCPBOGUSHOSTNAMEFILE
="/usr/share/dnsmasq/dhcpbogushostname.conf"
20 RFC6761FILE
="/usr/share/dnsmasq/rfc6761.conf"
21 DHCPSCRIPT
="/usr/lib/dnsmasq/dhcp-script.sh"
22 DHCPSCRIPT_DEPENDS
="/usr/share/libubox/jshn.sh /usr/bin/jshn /bin/ubus"
26 dnsmasq_ignore_opt
() {
29 if [ -z "$dnsmasq_features" ]; then
30 dnsmasq_features
="$(dnsmasq --version | grep -m1 'Compile time options:' | cut -d: -f2) "
31 [ "${dnsmasq_features#* DHCP }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp
=1
32 [ "${dnsmasq_features#* DHCPv6 }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp6
=1
33 [ "${dnsmasq_features#* DNSSEC }" = "$dnsmasq_features" ] || dnsmasq_has_dnssec
=1
34 [ "${dnsmasq_features#* TFTP }" = "$dnsmasq_features" ] || dnsmasq_has_tftp
=1
35 [ "${dnsmasq_features#* ipset }" = "$dnsmasq_features" ] || dnsmasq_has_ipset
=1
36 [ "${dnsmasq_features#* nftset }" = "$dnsmasq_features" ] || dnsmasq_has_nftset
=1
42 [ -z "$dnsmasq_has_dhcp6" ] ;;
46 [ -z "$dnsmasq_has_dhcp" ] ;;
49 if [ -z "$dnsmasq_has_dnssec" ]; then
50 echo "dnsmasq: \"$opt\" requested, but dnssec support is not available" >&2
56 [ -z "$dnsmasq_has_tftp" ] ;;
58 [ -z "$dnsmasq_has_ipset" ] ;;
60 [ -z "$dnsmasq_has_nftset" ] ;;
68 local opt
="${value%%=*}"
70 if ! dnsmasq_ignore_opt
"$opt"; then
71 echo "$value" >>$CONFIGFILE_TMP
77 local hex
="${2#0x}" # strip optional "0x" prefix
79 if [ -n "${hex//[0-9a-fA-F]/}" ]; then
80 # is invalid hex literal
84 # convert into host id
87 $(((0x$hex >> 16) % 65536)) \
98 while [ -n "$ip" ]; do
100 res
="$(($res * 256))"
101 res
="$(($res + $part))"
102 [ "${ip%.*}" != "$ip" ] && ip
="${ip#*.}" || ip
=
109 local stamp
="${BASEDHCPSTAMPFILE_CFG}.${ifname}.dhcp"
112 [ -s "$stamp" ] && return $
(cat "$stamp")
114 # If interface is down, skip it.
115 # The init script will be called again once the link is up
116 case "$(devstatus "$ifname" | jsonfilter -e @.up)" in
120 udhcpc
-n -q -s /bin
/true
-t 1 -i "$ifname" >&- && rv
=1 || rv
=0
127 pidof dnsmasq
>/dev
/null || \
128 logger
-t dnsmasq
"$@"
134 for file in /etc
/hotplug.d
/dhcp
/* /etc
/hotplug.d
/tftp
/* /etc
/hotplug.d
/neigh
/*; do
135 [ -f "$file" ] && return 0
147 [ -z "$default" ] && default
="0"
148 config_get_bool _loctmp
"$section" "$option" "$default"
149 [ $_loctmp -gt 0 ] && xappend
"$value"
158 config_get _loctmp
"$section" "$option" "$default"
159 [ -z "$_loctmp" ] && return 0
160 xappend
"$switch=$_loctmp"
164 xappend
"--server=$1"
167 append_rev_server
() {
168 xappend
"--rev-server=$1"
172 xappend
"--address=$1"
175 append_connmark_allowlist
() {
176 xappend
"--connmark-allowlist=$1"
180 network_get_device ifname
"$1" || ifname
="$1"
181 xappend
"--interface=$ifname"
184 append_listenaddress
() {
185 xappend
"--listen-address=$1"
188 append_notinterface
() {
189 network_get_device ifname
"$1" || ifname
="$1"
190 xappend
"--except-interface=$ifname"
196 for dirname in $EXTRA_MOUNT ; do
198 "${dirname}/"* |
"${dirname}" )
207 append_extramount
() {
208 ismounted
"$1" || append EXTRA_MOUNT
"$1"
212 append_extramount
"$1"
213 xappend
"--addn-hosts=$1"
216 append_bogusnxdomain
() {
217 xappend
"--bogus-nxdomain=$1"
220 append_pxe_service
() {
221 xappend
"--pxe-service=$1"
224 append_interface_name
() {
225 xappend
"--interface-name=$1,$2"
229 local cfg
="$1" func
="$2" match_cfg
="$3" found_cfg
231 # use entry when no instance entry set, or if it matches
232 config_get found_cfg
"$cfg" "instance"
233 if [ -z "$found_cfg" ] ||
[ "$found_cfg" = "$match_cfg" ]; then
238 dhcp_subscrid_add
() {
241 config_get networkid
"$cfg" networkid
242 [ -n "$networkid" ] ||
return 0
244 config_get subscriberid
"$cfg" subscriberid
245 [ -n "$subscriberid" ] ||
return 0
247 xappend
"--dhcp-subscrid=set:$networkid,$subscriberid"
249 config_get_bool force
"$cfg" force
0
251 dhcp_option_add
"$cfg" "$networkid" "$force"
254 dhcp_remoteid_add
() {
257 config_get networkid
"$cfg" networkid
258 [ -n "$networkid" ] ||
return 0
260 config_get remoteid
"$cfg" remoteid
261 [ -n "$remoteid" ] ||
return 0
263 xappend
"--dhcp-remoteid=set:$networkid,$remoteid"
265 config_get_bool force
"$cfg" force
0
267 dhcp_option_add
"$cfg" "$networkid" "$force"
270 dhcp_circuitid_add
() {
271 # TODO: DHCPV6 does not have circuitid; catch "option6:"
274 config_get networkid
"$cfg" networkid
275 [ -n "$networkid" ] ||
return 0
277 config_get circuitid
"$cfg" circuitid
278 [ -n "$circuitid" ] ||
return 0
280 xappend
"--dhcp-circuitid=set:$networkid,$circuitid"
282 config_get_bool force
"$cfg" force
0
284 dhcp_option_add
"$cfg" "$networkid" "$force"
287 dhcp_userclass_add
() {
290 config_get networkid
"$cfg" networkid
291 [ -n "$networkid" ] ||
return 0
293 config_get userclass
"$cfg" userclass
294 [ -n "$userclass" ] ||
return 0
296 xappend
"--dhcp-userclass=set:$networkid,$userclass"
298 config_get_bool force
"$cfg" force
0
300 dhcp_option_add
"$cfg" "$networkid" "$force"
303 dhcp_vendorclass_add
() {
304 # TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
307 config_get networkid
"$cfg" networkid
308 [ -n "$networkid" ] ||
return 0
310 config_get vendorclass
"$cfg" vendorclass
311 [ -n "$vendorclass" ] ||
return 0
313 xappend
"--dhcp-vendorclass=set:$networkid,$vendorclass"
315 config_get_bool force
"$cfg" force
0
317 dhcp_option_add
"$cfg" "$networkid" "$force"
323 config_get networkid
"$cfg" networkid
324 [ -n "$networkid" ] ||
return 0
326 config_get match
"$cfg" match
327 [ -n "$match" ] ||
return 0
329 xappend
"--dhcp-match=set:$networkid,$match"
331 config_get_bool force
"$cfg" force
0
333 dhcp_option_add
"$cfg" "$networkid" "$force"
338 local hosttag nametime addrs duids macs tags mtags
340 config_get_bool force
"$cfg" force
0
342 config_get networkid
"$cfg" networkid
343 [ -n "$networkid" ] && dhcp_option_add
"$cfg" "$networkid" "$force"
345 config_get_bool
enable "$cfg" enable 1
346 [ "$enable" = "0" ] && return 0
348 config_get name
"$cfg" name
349 config_get ip
"$cfg" ip
350 config_get hostid
"$cfg" hostid
352 [ -z "$ip" ] && [ -z "$name" ] && [ -z "$hostid" ] && return 0
354 config_get_bool dns
"$cfg" dns
0
355 [ "$dns" = "1" ] && [ -n "$ip" ] && [ -n "$name" ] && {
356 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE_TMP
359 config_get mac
"$cfg" mac
360 config_get duid
"$cfg" duid
361 config_get tag
"$cfg" tag
364 mtags
="${mtags}tag:$1,"
366 config_list_foreach
"$cfg" match_tag add_tag
368 if [ -n "$mac" ]; then
369 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
370 # many MAC are possible to track a laptop ON/OFF dock
371 for m
in $mac; do append macs
"$m" ","; done
374 if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ -n "$duid" ]; then
375 # --dhcp-host=id:00:03:00:01:12:00:00:01:02:03,[::beef],lap
376 # one (virtual) machine gets one DUID per RFC3315
377 duids
="id:${duid// */}"
380 if [ -z "$macs" ] && [ -z "$duids" ]; then
381 # --dhcp-host=lap,192.168.0.199,[::beef]
382 [ -n "$name" ] ||
return 0
387 if [ -n "$hostid" ]; then
388 hex_to_hostid hostid
"$hostid"
391 if [ -n "$tag" ]; then
392 for t
in $tag; do append tags
"$t" ",set:"; done
395 config_get_bool broadcast
"$cfg" broadcast
0
396 config_get leasetime
"$cfg" leasetime
398 [ "$broadcast" = "0" ] && broadcast
= || broadcast
=",set:needs-broadcast"
400 hosttag
="${networkid:+,set:${networkid}}${tags:+,set:${tags}}$broadcast"
401 nametime
="${name:+,$name}${leasetime:+,$leasetime}"
403 if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
404 addrs
="${ip:+,$ip}${hostid:+,[::$hostid]}"
405 xappend
"--dhcp-host=$mtags$macs${duids:+,$duids}$hosttag$addrs$nametime"
407 xappend
"--dhcp-host=$mtags$macs$hosttag${ip:+,$ip}$nametime"
411 dhcp_this_host_add
() {
415 local routerstub routername ifdashname
416 local lanaddr lanaddr6 lanaddrs6 ulaprefix
418 if [ "$mode" -gt 0 ] ; then
419 ifdashname
="${ifname//./-}"
420 routerstub
="$( md5sum /etc/os-release )"
421 routerstub
="router-${routerstub// */}"
422 routername
="$( uci_get system @system[0] hostname $routerstub )"
424 if [ "$mode" -gt 1 ] ; then
425 if [ "$mode" -gt 2 ] ; then
426 if [ "$mode" -gt 3 ] ; then
427 append_interface_name
"$ifdashname.$routername.$DOMAIN" "$ifname"
430 append_interface_name
"$routername.$DOMAIN" "$ifname"
433 # All IP addresses discovered by dnsmasq will be labeled (except fe80::)
434 append_interface_name
"$routername" "$ifname"
437 # This uses a static host file entry for only limited addresses.
438 # Use dnsmasq option "--expandhosts" to enable FQDN on host files.
439 ulaprefix
="$(uci_get network @globals[0] ula_prefix)"
440 network_get_ipaddr lanaddr
"$net"
441 network_get_ipaddrs6 lanaddrs6
"$net"
443 if [ -n "$lanaddr" ] ; then
444 dhcp_domain_add
"" "$routername" "$lanaddr"
447 if [ -n "$ulaprefix" ] && [ -n "$lanaddrs6" ] ; then
448 for lanaddr6
in $lanaddrs6 ; do
450 "${ulaprefix%%:/*}"*)
451 dhcp_domain_add
"" "$routername" "$lanaddr6"
461 # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
466 [ -n "$tag" ] ||
return 0
468 config_get_bool force
"$cfg" force
0
469 [ "$force" = "0" ] && force
=
471 config_get option
"$cfg" dhcp_option
473 xappend
"--dhcp-option${force:+-force}=tag:$tag,$o"
480 config_get networkid
"$cfg" networkid
481 [ -n "$networkid" ] ||
return 0
483 config_get mac
"$cfg" mac
484 [ -n "$mac" ] ||
return 0
486 xappend
"--dhcp-mac=$networkid,$mac"
488 dhcp_option_add
"$cfg" "$networkid"
492 # TODO: BOOTURL is different between DHCPv4 and DHCPv6
495 config_get networkid
"$cfg" networkid
497 config_get filename
"$cfg" filename
498 [ -n "$filename" ] ||
return 0
500 config_get servername
"$cfg" servername
501 config_get serveraddress
"$cfg" serveraddress
503 [ -n "$serveraddress" ] && [ ! -n "$servername" ] && return 0
505 xappend
"--dhcp-boot=${networkid:+tag:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
507 config_get_bool force
"$cfg" force
0
509 dhcp_option_add
"$cfg" "$networkid" "$force"
514 local dhcp6range
="::"
518 config_get net
"$cfg" interface
519 [ -n "$net" ] ||
return 0
521 config_get networkid
"$cfg" networkid
522 [ -n "$networkid" ] || networkid
="$net"
524 network_get_device ifname
"$net" ||
return 0
526 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver
"$net" && {
527 DNS_SERVERS
="$DNS_SERVERS $dnsserver"
530 append_bool
"$cfg" ignore
"--no-dhcp-interface=$ifname" && {
531 # Many ISP do not have useful names for DHCP customers (your WAN).
532 dhcp_this_host_add
"$net" "$ifname" "$ADD_WAN_FQDN"
536 network_get_subnet subnet
"$net" ||
return 0
537 network_get_protocol proto
"$net" ||
return 0
539 # Do not support non-static interfaces for now
540 [ static
= "$proto" ] ||
return 0
542 ipaddr
="${subnet%%/*}"
543 prefix_or_netmask
="${subnet##*/}"
545 # Override interface netmask with dhcp config if applicable
546 config_get netmask
"$cfg" netmask
548 [ -n "$netmask" ] && prefix_or_netmask
="$netmask"
550 #check for an already active dhcp server on the interface, unless 'force' is set
551 config_get_bool force
"$cfg" force
0
552 [ $force -gt 0 ] || dhcp_check
"$ifname" ||
{
554 "found already running DHCP-server on interface '$ifname'" \
555 "refusing to start, use 'option force 1' to override"
559 config_get start
"$cfg" start
100
560 config_get limit
"$cfg" limit
150
561 config_get leasetime
"$cfg" leasetime
12h
562 config_get options
"$cfg" options
563 config_get_bool dynamicdhcp
"$cfg" dynamicdhcp
1
564 config_get_bool dynamicdhcpv4
"$cfg" dynamicdhcpv4
$dynamicdhcp
565 config_get_bool dynamicdhcpv6
"$cfg" dynamicdhcpv6
$dynamicdhcp
567 config_get dhcpv4
"$cfg" dhcpv4
568 config_get dhcpv6
"$cfg" dhcpv6
570 config_get ra
"$cfg" ra
571 config_get ra_management
"$cfg" ra_management
572 config_get ra_preference
"$cfg" ra_preference
573 config_get dns
"$cfg" dns
574 config_get dns_sl
"$cfg" domain
576 config_list_foreach
"$cfg" "interface_name" append_interface_name
"$ifname"
578 # Put the router host name on this DHCP served interface address(es)
579 dhcp_this_host_add
"$net" "$ifname" "$ADD_LOCAL_FQDN"
581 start
="$( dhcp_calc "$start" )"
584 tags
="${tags}tag:$1,"
586 config_list_foreach
"$cfg" tag add_tag
588 nettag
="${networkid:+set:${networkid},}"
590 # make sure the DHCP range is not empty
591 if [ "$dhcpv4" != "disabled" ] && ipcalc
"$ipaddr/$prefix_or_netmask" "$start" "$limit" ; then
592 [ "$dynamicdhcpv4" = "0" ] && END
="static"
594 xappend
"--dhcp-range=$tags$nettag$START,$END,$NETMASK,$leasetime${options:+ $options}"
597 if [ "$dynamicdhcpv6" = "0" ] ; then
598 dhcp6range
="::,static"
600 dhcp6range
="::1000,::ffff"
604 if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ "$ra" = "server" ] ; then
605 # Note: dnsmasq cannot just be a DHCPv6 server (all-in-1)
606 # and let some other machine(s) send RA pointing to it.
608 case $ra_preference in
610 xappend
"--ra-param=$ifname,high,0,7200"
613 xappend
"--ra-param=$ifname,low,0,7200"
616 # Send UNSOLICITED RA at default interval and live for 2 hours.
617 # TODO: convert flexible lease time into route life time (only seconds).
618 xappend
"--ra-param=$ifname,0,7200"
622 if [ "$dhcpv6" = "disabled" ] ; then
627 case $ra_management in
629 # SLACC with DCHP for extended options
630 xappend
"--dhcp-range=$nettag::,constructor:$ifname,ra-stateless,ra-names"
633 # DHCP address and RA only for management redirection
634 xappend
"--dhcp-range=$nettag$dhcp6range,constructor:$ifname,$leasetime"
637 # SLAAC only but dnsmasq attempts to link HOSTNAME, DHCPv4 MAC, and SLAAC
638 xappend
"--dhcp-range=$nettag::,constructor:$ifname,ra-only,ra-names"
641 # SLAAC and full DHCP
642 xappend
"--dhcp-range=$nettag$dhcp6range,constructor:$ifname,slaac,ra-names,$leasetime"
646 if [ -n "$dns" ]; then
648 for d
in $dns; do append dnss
"[$d]" ","; done
653 dhcp_option_append
"option6:dns-server,$dnss" "$networkid"
655 if [ -n "$dns_sl" ]; then
657 for dd in $dns_sl; do append ddssl
"$dd" ","; done
660 dhcp_option_append
"option6:domain-search,$ddssl" "$networkid"
663 dhcp_option_add
"$cfg" "$networkid" 0
664 dhcp_option_add
"$cfg" "$networkid" 2
667 dhcp_option_append
() {
672 xappend
"--dhcp-option${force:+-force}=${networkid:+$networkid,}$option"
676 # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
680 local opt
="dhcp_option"
682 [ "$force" = "0" ] && force
=
683 [ "$force" = "2" ] && opt
="dhcp_option_force"
686 config_get list_len
"$cfg" "${opt}_LENGTH"
688 if [ -n "$list_len" ]; then
689 config_list_foreach
"$cfg" "$opt" dhcp_option_append
"$networkid" "$force"
691 config_get dhcp_option
"$cfg" "$opt"
693 [ -n "$dhcp_option" ] && echo "Warning: the 'option $opt' syntax is deprecated, use 'list $opt'" >&2
696 for option
in $dhcp_option; do
697 dhcp_option_append
"$option" "$networkid" "$force"
704 local ip name names record
706 config_get names
"$cfg" name
"$2"
707 [ -n "$names" ] ||
return 0
709 config_get ip
"$cfg" ip
"$3"
710 [ -n "$ip" ] ||
return 0
712 for name
in $names; do
713 record
="${record:+$record }$name"
716 echo "$ip $record" >> $HOSTFILE_TMP
722 config_get srv
"$cfg" srv
723 [ -n "$srv" ] ||
return 0
725 config_get target
"$cfg" target
726 [ -n "$target" ] ||
return 0
728 config_get port
"$cfg" port
729 [ -n "$port" ] ||
return 0
731 config_get class
"$cfg" class
732 config_get weight
"$cfg" weight
734 local service
="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
736 xappend
"--srv-host=$service"
741 local domain relay pref
743 config_get domain
"$cfg" domain
744 [ -n "$domain" ] ||
return 0
746 config_get relay
"$cfg" relay
747 [ -n "$relay" ] ||
return 0
749 config_get pref
"$cfg" pref
0
751 local service
="$domain,$relay,$pref"
753 xappend
"--mx-host=$service"
760 config_get cname
"$cfg" cname
761 [ -n "$cname" ] ||
return 0
763 config_get target
"$cfg" target
764 [ -n "$target" ] ||
return 0
766 xappend
"--cname=${cname},${target}"
769 dhcp_hostrecord_add
() {
771 local names addresses record val
773 config_get names
"$cfg" name
"$2"
774 if [ -z "$names" ]; then
778 config_get addresses
"$cfg" ip
"$3"
779 if [ -z "$addresses" ]; then
783 for val
in $names $addresses; do
784 record
="${record:+$record,}$val"
787 xappend
"--host-record=$record"
792 local local_addr server_addr interface
794 config_get local_addr
"$cfg" local_addr
795 [ -n "$local_addr" ] ||
return 0
797 config_get server_addr
"$cfg" server_addr
798 [ -n "$server_addr" ] ||
return 0
800 config_get interface
"$cfg" interface
801 if [ -z "$interface" ]; then
802 xappend
"--dhcp-relay=$local_addr,$server_addr"
804 network_get_device ifname
"$interface" ||
return
805 xappend
"--dhcp-relay=$local_addr,$server_addr,$ifname"
809 dnsmasq_ipset_add
() {
811 local ipsets nftsets domains
814 ipsets
="${ipsets:+$ipsets,}$1"
821 [ -n "$fam" ] || fam
=$
(echo "$set" |
sed -nre \
822 's#^.*[^0-9]([46])$|^.*[-_]([46])[-_].*$|^([46])[^0-9].*$#\1\2\3#p')
824 fam
=$
(nft
-t list
set "$table_family" "$table" "$set" 2>&1 |
sed -nre \
825 's#^\t\ttype .*\bipv([46])_addr\b.*$#\1#p')
828 logger
-t dnsmasq
"Cannot infer address family from non-existent nftables set '$set'"
830 nftsets
="${nftsets:+$nftsets,}${fam:+$fam#}$table_family#$table#$set"
835 # leading '/' is expected
836 domains
="$domains/$1"
839 config_get table
"$cfg" table
'fw4'
840 config_get table_family
"$cfg" table_family
'inet'
841 if [ "$table_family" = "ip" ] ; then
843 elif [ "$table_family" = "ip6" ] ; then
846 config_get family
"$cfg" family
849 config_list_foreach
"$cfg" "name" add_ipset
850 config_list_foreach
"$cfg" "name" add_nftset
851 config_list_foreach
"$cfg" "domain" add_domain
853 if [ -z "$ipsets" ] ||
[ -z "$nftsets" ] ||
[ -z "$domains" ]; then
857 xappend
"--ipset=$domains/$ipsets"
858 xappend
"--nftset=$domains/$nftsets"
864 local disabled user_dhcpscript logfacility
865 local resolvfile resolvdir localuse
=1
867 config_get_bool disabled
"$cfg" disabled
0
868 [ "$disabled" -gt 0 ] && return 0
870 # reset list of DOMAINS, DNS servers and EXTRA mounts (for each dnsmasq instance)
874 CONFIGFILE
="${BASECONFIGFILE}.${cfg}"
875 CONFIGFILE_TMP
="${CONFIGFILE}.$$"
876 HOSTFILE
="${BASEHOSTFILE}.${cfg}"
877 HOSTFILE_TMP
="${HOSTFILE}.$$"
878 HOSTFILE_DIR
="$(dirname "$HOSTFILE")"
879 BASEDHCPSTAMPFILE_CFG
="${BASEDHCPSTAMPFILE}.${cfg}"
881 # before we can call xappend
882 umask u
=rwx
,g
=rx
,o
=rx
883 mkdir
-p /var
/run
/dnsmasq
/
884 mkdir
-p $
(dirname $CONFIGFILE)
885 mkdir
-p "$HOSTFILE_DIR"
886 mkdir
-p /var
/lib
/misc
887 chown dnsmasq
:dnsmasq
/var
/run
/dnsmasq
889 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
890 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE_TMP
892 local dnsmasqconffile
="/etc/dnsmasq.${cfg}.conf"
893 if [ ! -r "$dnsmasqconffile" ]; then
894 dnsmasqconffile
=/etc
/dnsmasq.conf
897 # if we did this last, we could override auto-generated config
898 [ -f "${dnsmasqconffile}" ] && {
899 xappend
"--conf-file=${dnsmasqconffile}"
902 $PROG --version |
grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE
=1 || DHCPv6CAPABLE
=0
905 if [ -x /usr
/sbin
/odhcpd
] && [ -x /etc
/init.d
/odhcpd
] ; then
906 local odhcpd_is_main odhcpd_is_enabled
907 config_get odhcpd_is_main odhcpd maindhcp
0
908 /etc
/init.d
/odhcpd enabled
&& odhcpd_is_enabled
=1 || odhcpd_is_enabled
=0
911 if [ "$odhcpd_is_enabled" -eq 0 ] && [ "$DHCPv6CAPABLE" -eq 1 ] ; then
912 # DHCP V4 and V6 in DNSMASQ
914 elif [ "$odhcpd_is_main" -gt 0 ] ; then
915 # ODHCPD is doing it all
918 # You have ODHCPD but use DNSMASQ for DHCPV4
922 elif [ "$DHCPv6CAPABLE" -eq 1 ] ; then
923 # DHCP V4 and V6 in DNSMASQ
929 # Allow DHCP/DHCPv6 to be handled by ISC DHCPD
930 if [ -x /usr
/sbin
/dhcpd
] ; then
931 if [ -x /etc
/init.d
/dhcpd
] ; then
932 /etc
/init.d
/dhcpd enabled
&& DNSMASQ_DHCP_VER
=0
934 if [ -x /etc
/init.d
/dhcpd6
] && [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
935 /etc
/init.d
/dhcpd6 enabled
&& DNSMASQ_DHCP_VER
=4
939 append_bool
"$cfg" authoritative
"--dhcp-authoritative"
940 append_bool
"$cfg" nodaemon
"--no-daemon"
941 append_bool
"$cfg" domainneeded
"--domain-needed"
942 append_bool
"$cfg" filterwin2k
"--filterwin2k"
943 append_bool
"$cfg" nohosts
"--no-hosts"
944 append_bool
"$cfg" nonegcache
"--no-negcache"
945 append_bool
"$cfg" strictorder
"--strict-order"
946 append_bool
"$cfg" logqueries
"--log-queries=extra"
947 append_bool
"$cfg" noresolv
"--no-resolv"
948 append_bool
"$cfg" localise_queries
"--localise-queries"
949 append_bool
"$cfg" readethers
"--read-ethers"
951 local instance_name
="dnsmasq.$cfg"
952 if [ "$cfg" = "$DEFAULT_INSTANCE" ]; then
953 instance_name
="dnsmasq"
955 config_get_bool dbus
"$cfg" "dbus" 0
956 [ $dbus -gt 0 ] && xappend
"--enable-dbus=uk.org.thekelleys.$instance_name"
957 config_get_bool ubus
"$cfg" "ubus" 1
958 [ $ubus -gt 0 ] && xappend
"--enable-ubus=$instance_name"
960 append_bool
"$cfg" expandhosts
"--expand-hosts"
961 config_get tftp_root
"$cfg" "tftp_root"
962 [ -n "$tftp_root" ] && mkdir
-p "$tftp_root" && append_bool
"$cfg" enable_tftp
"--enable-tftp"
963 append_bool
"$cfg" tftp_no_fail
"--tftp-no-fail"
964 append_bool
"$cfg" nonwildcard
"--bind-dynamic" 1
965 append_bool
"$cfg" fqdn
"--dhcp-fqdn"
966 append_bool
"$cfg" proxydnssec
"--proxy-dnssec"
967 append_bool
"$cfg" localservice
"--local-service"
968 append_bool
"$cfg" logdhcp
"--log-dhcp"
969 append_bool
"$cfg" quietdhcp
"--quiet-dhcp"
970 append_bool
"$cfg" sequential_ip
"--dhcp-sequential-ip"
971 append_bool
"$cfg" allservers
"--all-servers"
972 append_bool
"$cfg" noping
"--no-ping"
973 append_bool
"$cfg" rapidcommit
"--dhcp-rapid-commit"
974 append_bool
"$cfg" scriptarp
"--script-arp"
976 append_bool
"$cfg" filter_aaaa
"--filter-AAAA"
977 append_bool
"$cfg" filter_a
"--filter-A"
979 append_parm
"$cfg" logfacility
"--log-facility"
980 config_get logfacility
"$cfg" "logfacility"
981 append_parm
"$cfg" cachesize
"--cache-size"
982 append_parm
"$cfg" dnsforwardmax
"--dns-forward-max"
983 append_parm
"$cfg" port
"--port"
984 append_parm
"$cfg" ednspacket_max
"--edns-packet-max"
985 append_parm
"$cfg" dhcpleasemax
"--dhcp-lease-max"
986 append_parm
"$cfg" "queryport" "--query-port"
987 append_parm
"$cfg" "minport" "--min-port"
988 append_parm
"$cfg" "maxport" "--max-port"
989 append_parm
"$cfg" "domain" "--domain"
990 append_parm
"$cfg" "local" "--local"
991 config_list_foreach
"$cfg" "listen_address" append_listenaddress
992 config_list_foreach
"$cfg" "server" append_server
993 config_list_foreach
"$cfg" "rev_server" append_rev_server
994 config_list_foreach
"$cfg" "address" append_address
996 local connmark_allowlist_enable
997 config_get connmark_allowlist_enable
"$cfg" connmark_allowlist_enable
0
998 [ "$connmark_allowlist_enable" -gt 0 ] && {
999 append_parm
"$cfg" "connmark_allowlist_enable" "--connmark-allowlist-enable"
1000 config_list_foreach
"$cfg" "connmark_allowlist" append_connmark_allowlist
1004 config_list_foreach
"$cfg" "interface" append_interface
1005 config_list_foreach
"$cfg" "notinterface" append_notinterface
1007 config_get_bool ignore_hosts_dir
"$cfg" ignore_hosts_dir
0
1008 if [ "$ignore_hosts_dir" = "1" ]; then
1009 xappend
"--addn-hosts=$HOSTFILE"
1010 append EXTRA_MOUNT
"$HOSTFILE"
1012 xappend
"--addn-hosts=$HOSTFILE_DIR"
1013 append EXTRA_MOUNT
"$HOSTFILE_DIR"
1015 config_list_foreach
"$cfg" "addnhosts" append_addnhosts
1016 config_list_foreach
"$cfg" "bogusnxdomain" append_bogusnxdomain
1017 append_parm
"$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
1020 config_get serversfile
"$cfg" "serversfile"
1021 [ -n "$serversfile" ] && {
1022 xappend
"--servers-file=$serversfile"
1023 append EXTRA_MOUNT
"$serversfile"
1026 append_parm
"$cfg" "tftp_root" "--tftp-root"
1027 append_parm
"$cfg" "dhcp_boot" "--dhcp-boot"
1028 append_parm
"$cfg" "local_ttl" "--local-ttl"
1029 append_parm
"$cfg" "max_ttl" "--max-ttl"
1030 append_parm
"$cfg" "min_cache_ttl" "--min-cache-ttl"
1031 append_parm
"$cfg" "max_cache_ttl" "--max-cache-ttl"
1032 append_parm
"$cfg" "pxe_prompt" "--pxe-prompt"
1033 append_parm
"$cfg" "tftp_unique_root" "--tftp-unique-root"
1034 config_list_foreach
"$cfg" "pxe_service" append_pxe_service
1035 config_get DOMAIN
"$cfg" domain
1037 config_get_bool ADD_LOCAL_DOMAIN
"$cfg" add_local_domain
1
1038 config_get_bool ADD_LOCAL_HOSTNAME
"$cfg" add_local_hostname
1
1039 config_get ADD_LOCAL_FQDN
"$cfg" add_local_fqdn
""
1040 config_get ADD_WAN_FQDN
"$cfg" add_wan_fqdn
0
1042 if [ -z "$ADD_LOCAL_FQDN" ] ; then
1043 # maintain support for previous UCI
1044 ADD_LOCAL_FQDN
="$ADD_LOCAL_HOSTNAME"
1047 config_get user_dhcpscript
$cfg dhcpscript
1048 if has_handler ||
[ -n "$user_dhcpscript" ]; then
1049 xappend
"--dhcp-script=$DHCPSCRIPT"
1050 xappend
"--script-arp"
1053 config_get leasefile
$cfg leasefile
"/tmp/dhcp.leases"
1054 [ -n "$leasefile" ] && [ ! -e "$leasefile" ] && touch "$leasefile"
1055 config_get_bool cachelocal
"$cfg" cachelocal
1
1057 config_get_bool noresolv
"$cfg" noresolv
0
1058 if [ "$noresolv" != "1" ]; then
1059 config_get resolvfile
"$cfg" resolvfile
/tmp
/resolv.conf.d
/resolv.conf.auto
1060 [ -n "$resolvfile" ] && [ ! -e "$resolvfile" ] && touch "$resolvfile"
1061 xappend
"--resolv-file=$resolvfile"
1062 [ "$resolvfile" != "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse
=0
1063 resolvdir
="$(dirname "$resolvfile")"
1065 config_get_bool localuse
"$cfg" localuse
"$localuse"
1067 config_get hostsfile
"$cfg" dhcphostsfile
1068 [ -e "$hostsfile" ] && xappend
"--dhcp-hostsfile=$hostsfile"
1071 config_get_bool rebind
"$cfg" rebind_protection
1
1072 [ $rebind -gt 0 ] && {
1074 "DNS rebinding protection is active," \
1075 "will discard upstream RFC1918 responses!"
1076 xappend
"--stop-dns-rebind"
1078 local rebind_localhost
1079 config_get_bool rebind_localhost
"$cfg" rebind_localhost
0
1080 [ $rebind_localhost -gt 0 ] && {
1081 log_once
"Allowing 127.0.0.0/8 responses"
1082 xappend
"--rebind-localhost-ok"
1085 append_rebind_domain
() {
1086 log_once
"Allowing RFC1918 responses for domain $1"
1087 xappend
"--rebind-domain-ok=$1"
1090 config_list_foreach
"$cfg" rebind_domain append_rebind_domain
1093 config_get_bool dnssec
"$cfg" dnssec
0
1094 [ "$dnssec" -gt 0 ] && {
1095 xappend
"--conf-file=$TRUSTANCHORSFILE"
1097 [ -x /etc
/init.d
/sysntpd
] && {
1098 if /etc
/init.d
/sysntpd enabled ||
[ "$(uci_get system.ntp.enabled)" = "1" ] ; then
1099 [ -f "$TIMEVALIDFILE" ] || xappend
"--dnssec-no-timecheck"
1102 config_get_bool dnsseccheckunsigned
"$cfg" dnsseccheckunsigned
1
1103 [ "$dnsseccheckunsigned" -eq 0 ] && xappend
"--dnssec-check-unsigned=no"
1106 config_get addmac
"$cfg" addmac
0
1107 [ "$addmac" != "0" ] && {
1108 [ "$addmac" = "1" ] && addmac
=
1109 xappend
"--add-mac${addmac:+="$addmac"}"
1111 append_bool
"$cfg" stripmac
"--strip-mac"
1112 append_parm
"$cfg" addsubnet
"--add-subnet"
1113 append_bool
"$cfg" stripsubnet
"--strip-subnet"
1115 dhcp_option_add
"$cfg" "" 0
1116 dhcp_option_add
"$cfg" "" 2
1118 xappend
"--dhcp-broadcast=tag:needs-broadcast"
1121 config_get dnsmasqconfdir
"$cfg" confdir
"/tmp/dnsmasq.d"
1122 xappend
"--conf-dir=$dnsmasqconfdir"
1123 dnsmasqconfdir
="${dnsmasqconfdir%%,*}"
1124 [ ! -d "$dnsmasqconfdir" ] && mkdir
-p $dnsmasqconfdir
1125 xappend
"--user=dnsmasq"
1126 xappend
"--group=dnsmasq"
1127 echo >> $CONFIGFILE_TMP
1129 config_get_bool enable_tftp
"$cfg" enable_tftp
0
1130 [ "$enable_tftp" -gt 0 ] && {
1131 config_get tftp_root
"$cfg" tftp_root
1132 append EXTRA_MOUNT
$tftp_root
1135 config_foreach filter_dnsmasq
host dhcp_host_add
"$cfg"
1136 echo >> $CONFIGFILE_TMP
1138 config_get_bool dhcpbogushostname
"$cfg" dhcpbogushostname
1
1139 [ "$dhcpbogushostname" -gt 0 ] && {
1140 xappend
"--dhcp-ignore-names=tag:dhcp_bogus_hostname"
1141 [ -r "$DHCPBOGUSHOSTNAMEFILE" ] && xappend
"--conf-file=$DHCPBOGUSHOSTNAMEFILE"
1144 config_foreach filter_dnsmasq boot dhcp_boot_add
"$cfg"
1145 config_foreach filter_dnsmasq mac dhcp_mac_add
"$cfg"
1146 config_foreach filter_dnsmasq tag dhcp_tag_add
"$cfg"
1147 config_foreach filter_dnsmasq vendorclass dhcp_vendorclass_add
"$cfg"
1148 config_foreach filter_dnsmasq userclass dhcp_userclass_add
"$cfg"
1149 config_foreach filter_dnsmasq circuitid dhcp_circuitid_add
"$cfg"
1150 config_foreach filter_dnsmasq remoteid dhcp_remoteid_add
"$cfg"
1151 config_foreach filter_dnsmasq subscrid dhcp_subscrid_add
"$cfg"
1152 config_foreach filter_dnsmasq match dhcp_match_add
"$cfg"
1153 config_foreach filter_dnsmasq domain dhcp_domain_add
"$cfg"
1154 config_foreach filter_dnsmasq hostrecord dhcp_hostrecord_add
"$cfg"
1155 [ -n "$BOOT" ] || config_foreach filter_dnsmasq relay dhcp_relay_add
"$cfg"
1157 echo >> $CONFIGFILE_TMP
1158 config_foreach filter_dnsmasq srvhost dhcp_srv_add
"$cfg"
1159 config_foreach filter_dnsmasq mxhost dhcp_mx_add
"$cfg"
1160 echo >> $CONFIGFILE_TMP
1162 config_get_bool boguspriv
"$cfg" boguspriv
1
1163 [ "$boguspriv" -gt 0 ] && {
1164 xappend
"--bogus-priv"
1165 [ -r "$RFC6761FILE" ] && xappend
"--conf-file=$RFC6761FILE"
1168 if [ "$DNSMASQ_DHCP_VER" -gt 4 ] ; then
1169 # Enable RA feature for when/if it is constructed,
1170 # and RA is selected per interface pool (RA, DHCP, or both),
1171 # but no one (should) want RA broadcast in syslog
1172 [ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add
"$cfg"
1173 xappend
"--enable-ra"
1174 xappend
"--quiet-ra"
1175 append_bool
"$cfg" quietdhcp
"--quiet-dhcp6"
1177 elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
1178 [ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add
"$cfg"
1182 echo >> $CONFIGFILE_TMP
1183 config_foreach filter_dnsmasq cname dhcp_cname_add
"$cfg"
1184 echo >> $CONFIGFILE_TMP
1186 echo >> $CONFIGFILE_TMP
1187 config_foreach filter_dnsmasq ipset dnsmasq_ipset_add
"$cfg"
1188 echo >> $CONFIGFILE_TMP
1190 mv -f $CONFIGFILE_TMP $CONFIGFILE
1191 mv -f $HOSTFILE_TMP $HOSTFILE
1193 [ "$localuse" -gt 0 ] && {
1194 rm -f /tmp
/resolv.conf
1195 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
1196 echo "search $DOMAIN" >> /tmp
/resolv.conf
1198 DNS_SERVERS
="$DNS_SERVERS 127.0.0.1"
1199 [ -e /proc
/sys
/net
/ipv6
] && DNS_SERVERS
="$DNS_SERVERS ::1"
1200 for DNS_SERVER
in $DNS_SERVERS ; do
1201 echo "nameserver $DNS_SERVER" >> /tmp
/resolv.conf
1205 config_list_foreach
"$cfg" addnmount append_extramount
1207 procd_open_instance
$cfg
1208 procd_set_param
command $PROG -C $CONFIGFILE -k -x /var
/run
/dnsmasq
/dnsmasq.
"${cfg}".pid
1209 procd_set_param
file $CONFIGFILE
1210 [ -n "$user_dhcpscript" ] && procd_set_param env USER_DHCPSCRIPT
="$user_dhcpscript"
1211 procd_set_param respawn
1213 local instance_ifc instance_netdev
1214 config_get instance_ifc
"$cfg" interface
1215 [ -n "$instance_ifc" ] && network_get_device instance_netdev
"$instance_ifc" &&
1216 [ -n "$instance_netdev" ] && procd_set_param netdev
$instance_netdev
1218 procd_add_jail dnsmasq ubus log
1219 procd_add_jail_mount
$CONFIGFILE $DHCPBOGUSHOSTNAMEFILE $DHCPSCRIPT $DHCPSCRIPT_DEPENDS
1220 procd_add_jail_mount
$EXTRA_MOUNT $RFC6761FILE $TRUSTANCHORSFILE
1221 procd_add_jail_mount
$dnsmasqconffile $dnsmasqconfdir $resolvdir $user_dhcpscript
1222 procd_add_jail_mount
/etc
/passwd
/etc
/group
/etc
/TZ
/etc
/hosts
/etc
/ethers
1223 procd_add_jail_mount_rw
/var
/run
/dnsmasq
/ $leasefile
1224 case "$logfacility" in */*)
1225 [ ! -e "$logfacility" ] && touch "$logfacility"
1226 procd_add_jail_mount_rw
"$logfacility"
1228 [ -e "$hostsfile" ] && procd_add_jail_mount
$hostsfile
1230 procd_close_instance
1236 local noresolv resolvfile localuse
=1
1238 config_get_bool noresolv
"$cfg" noresolv
0
1239 config_get resolvfile
"$cfg" "resolvfile"
1241 [ "$noresolv" = 0 ] && [ "$resolvfile" != "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse
=0
1242 config_get_bool localuse
"$cfg" localuse
"$localuse"
1243 [ "$localuse" -gt 0 ] && ln -sf "/tmp/resolv.conf.d/resolv.conf.auto" /tmp
/resolv.conf
1245 rm -f ${BASEDHCPSTAMPFILE}.
${cfg}.
*.dhcp
1248 add_interface_trigger
()
1250 local interface ifname ignore
1252 config_get interface
"$1" interface
1253 config_get_bool ignore
"$1" ignore
0
1254 network_get_device ifname
"$interface" || ignore
=0
1256 [ -n "$interface" ] && [ $ignore -eq 0 ] && procd_add_interface_trigger
"interface.*" "$interface" /etc
/init.d
/dnsmasq reload
1261 procd_add_reload_trigger
"dhcp" "system"
1264 config_foreach add_interface_trigger dhcp
1265 config_foreach add_interface_trigger relay
1276 local instance_found
=0
1277 local first_instance
=""
1279 .
/lib
/functions
/network.sh
1284 if [ "$type" = "dnsmasq" ]; then
1285 if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
1288 if [ -z "$DEFAULT_INSTANCE" ]; then
1290 config_get_bool disabled
"$name" disabled
0
1291 if [ "$disabled" -eq 0 ]; then
1292 # First enabled section will be assigned default instance name.
1293 # Unnamed sections get precedence over named sections.
1294 if expr "$cfg" : 'cfg[0-9a-f]*$' >/dev
/null
= "9"; then # See uci_fixup_section.
1295 DEFAULT_INSTANCE
="$name" # Unnamed config section.
1296 elif [ -z "$first_instance" ]; then
1297 first_instance
="$name"
1306 if [ -z "$DEFAULT_INSTANCE" ]; then
1307 DEFAULT_INSTANCE
="$first_instance" # No unnamed config section was found.
1310 if [ -n "$instance" ]; then
1311 [ "$instance_found" -gt 0 ] ||
return
1312 dnsmasq_start
"$instance"
1314 config_foreach dnsmasq_start dnsmasq
1319 rc_procd start_service
"$@"
1320 procd_send_signal dnsmasq
"$@"
1325 local instance_found
=0
1330 if [ "$type" = "dnsmasq" ]; then
1331 if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
1339 if [ -n "$instance" ]; then
1340 [ "$instance_found" -gt 0 ] ||
return
1341 dnsmasq_stop
"$instance"
1343 config_foreach dnsmasq_stop dnsmasq