1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2007-2012 OpenWrt.org
15 CONFIGFILE="/var/etc/dnsmasq.conf"
16 CONFIGFILE_TMP="/var/etc/dnsmasq.conf.$$"
17 HOSTFILE="/tmp/hosts/dhcp"
18 TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
19 TIMESTAMPFILE="/etc/dnsmasq.time"
20 TIMEVALIDFILE="/var/state/dnsmasqsec"
25 echo "${value#--}" >> $CONFIGFILE_TMP
30 local hex="${2#0x}" # strip optional "0x" prefix
32 if [ -n "${hex//[0-9a-fA-F]/}" ]; then
33 # is invalid hex literal
37 # convert into host id
40 $(((0x$hex >> 16) % 65536)) \
51 while [ -n "$ip" ]; do
54 res="$(($res + $part))"
55 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
62 local stamp="/var/run/dnsmasq.$ifname.dhcp"
65 [ -s "$stamp" ] && return $(cat "$stamp")
67 udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
71 "found already running DHCP-server on interface '$ifname'" \
72 "refusing to start, use 'option force 1' to override"
79 pidof dnsmasq >/dev/null || \
80 logger -t dnsmasq "$@"
88 config_get_bool _loctmp "$section" "$option" 0
89 [ $_loctmp -gt 0 ] && xappend "$value"
98 config_get _loctmp "$section" "$option" "$default"
99 [ -z "$_loctmp" ] && return 0
100 xappend "$switch=$_loctmp"
104 xappend "--server=$1"
108 xappend "--address=$1"
116 local ifname=$(uci_get_state network "$1" ifname "$1")
117 xappend "--interface=$ifname"
120 append_notinterface() {
121 local ifname=$(uci_get_state network "$1" ifname "$1")
122 xappend "--except-interface=$ifname"
126 xappend "--addn-hosts=$1"
129 append_bogusnxdomain() {
130 xappend "--bogus-nxdomain=$1"
133 append_pxe_service() {
134 xappend "--pxe-service=$1"
139 append_bool "$cfg" authoritative "--dhcp-authoritative"
140 append_bool "$cfg" nodaemon "--no-daemon"
141 append_bool "$cfg" domainneeded "--domain-needed"
142 append_bool "$cfg" filterwin2k "--filterwin2k"
143 append_bool "$cfg" nohosts "--no-hosts"
144 append_bool "$cfg" nonegcache "--no-negcache"
145 append_bool "$cfg" strictorder "--strict-order"
146 append_bool "$cfg" logqueries "--log-queries=extra"
147 append_bool "$cfg" noresolv "--no-resolv"
148 append_bool "$cfg" localise_queries "--localise-queries"
149 append_bool "$cfg" readethers "--read-ethers"
150 append_bool "$cfg" dbus "--enable-dbus"
151 append_bool "$cfg" boguspriv "--bogus-priv"
152 append_bool "$cfg" expandhosts "--expand-hosts"
153 config_get tftp_root "$cfg" "tftp_root"
154 [ -d "$tftp_root" ] && append_bool "$cfg" enable_tftp "--enable-tftp"
155 append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
156 append_bool "$cfg" nonwildcard "--bind-dynamic"
157 append_bool "$cfg" fqdn "--dhcp-fqdn"
158 append_bool "$cfg" proxydnssec "--proxy-dnssec"
159 append_bool "$cfg" localservice "--local-service"
160 append_bool "$cfg" quietdhcp "--quiet-dhcp"
161 append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
162 append_bool "$cfg" allservers "--all-servers"
163 append_bool "$cfg" noping "--no-ping"
165 append_parm "$cfg" dhcpscript "--dhcp-script"
166 append_parm "$cfg" cachesize "--cache-size"
167 append_parm "$cfg" dnsforwardmax "--dns-forward-max"
168 append_parm "$cfg" port "--port"
169 append_parm "$cfg" ednspacket_max "--edns-packet-max"
170 append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
171 append_parm "$cfg" "queryport" "--query-port"
172 append_parm "$cfg" "minport" "--min-port"
173 append_parm "$cfg" "maxport" "--max-port"
174 append_parm "$cfg" "domain" "--domain"
175 append_parm "$cfg" "local" "--server"
176 config_list_foreach "$cfg" "server" append_server
177 config_list_foreach "$cfg" "address" append_address
178 config_list_foreach "$cfg" "ipset" append_ipset
179 config_list_foreach "$cfg" "interface" append_interface
180 config_list_foreach "$cfg" "notinterface" append_notinterface
181 config_list_foreach "$cfg" "addnhosts" append_addnhosts
182 config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
183 append_parm "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
184 append_parm "$cfg" "resolvfile" "--resolv-file" "/tmp/resolv.conf.auto"
185 append_parm "$cfg" "serversfile" "--servers-file"
186 append_parm "$cfg" "tftp_root" "--tftp-root"
187 append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
188 append_parm "$cfg" "local_ttl" "--local-ttl"
189 append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
190 config_list_foreach "$cfg" "pxe_service" append_pxe_service
191 config_get DOMAIN "$cfg" domain
193 config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
194 config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
196 config_get_bool readethers "$cfg" readethers
197 [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
199 config_get leasefile $cfg leasefile "/tmp/dhcp.leases"
200 [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
201 config_get_bool cachelocal "$cfg" cachelocal 1
203 config_get_bool noresolv "$cfg" noresolv 0
204 if [ "$noresolv" != "1" ]; then
205 config_get resolvfile "$cfg" resolvfile "/tmp/resolv.conf.auto"
206 # So jail doesn't complain if file missing
207 [ -n "$resolvfile" -a \! -e "$resolvfile" ] && touch "$resolvfile"
210 config_get hostsfile "$cfg" dhcphostsfile
211 [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
214 config_get_bool rebind "$cfg" rebind_protection 1
215 [ $rebind -gt 0 ] && {
217 "DNS rebinding protection is active," \
218 "will discard upstream RFC1918 responses!"
219 xappend "--stop-dns-rebind"
221 local rebind_localhost
222 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
223 [ $rebind_localhost -gt 0 ] && {
224 log_once "Allowing 127.0.0.0/8 responses"
225 xappend "--rebind-localhost-ok"
228 append_rebind_domain() {
229 log_once "Allowing RFC1918 responses for domain $1"
230 xappend "--rebind-domain-ok=$1"
233 config_list_foreach "$cfg" rebind_domain append_rebind_domain
236 config_get_bool dnssec "$cfg" dnssec 0
237 [ "$dnssec" -gt 0 ] && {
238 xappend "--conf-file=$TRUSTANCHORSFILE"
240 [ -x /etc/init.d/sysntpd ] && {
241 /etc/init.d/sysntpd enabled
242 [ "$?" -ne 0 -o "$(uci_get system.ntp.enabled)" = "1" ] && {
243 [ -f "$TIMEVALIDFILE" ] || xappend "--dnssec-no-timecheck"
246 append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
249 dhcp_option_add "$cfg" "" 0
251 xappend "--dhcp-broadcast=tag:needs-broadcast"
253 mkdir -p /tmp/hosts /tmp/dnsmasq.d
254 xappend "--addn-hosts=/tmp/hosts"
255 xappend "--conf-dir=/tmp/dnsmasq.d"
256 xappend "--user=dnsmasq"
257 xappend "--group=dnsmasq"
259 echo >> $CONFIGFILE_TMP
261 config_get_bool enable_tftp "$cfg" enable_tftp 0
262 [ "$enable_tftp" -gt 0 ] && {
263 config_get tftp_root "$cfg" tftp_root
264 append EXTRA_MOUNT $tftp_root
268 dhcp_subscrid_add() {
271 config_get networkid "$cfg" networkid
272 [ -n "$networkid" ] || return 0
274 config_get subscriberid "$cfg" subscriberid
275 [ -n "$subscriberid" ] || return 0
277 xappend "--dhcp-subscrid=$networkid,$subscriberid"
279 config_get_bool force "$cfg" force 0
281 dhcp_option_add "$cfg" "$networkid" "$force"
284 dhcp_remoteid_add() {
287 config_get networkid "$cfg" networkid
288 [ -n "$networkid" ] || return 0
290 config_get remoteid "$cfg" remoteid
291 [ -n "$remoteid" ] || return 0
293 xappend "--dhcp-remoteid=$networkid,$remoteid"
295 config_get_bool force "$cfg" force 0
297 dhcp_option_add "$cfg" "$networkid" "$force"
300 dhcp_circuitid_add() {
303 config_get networkid "$cfg" networkid
304 [ -n "$networkid" ] || return 0
306 config_get circuitid "$cfg" circuitid
307 [ -n "$circuitid" ] || return 0
309 xappend "--dhcp-circuitid=$networkid,$circuitid"
311 config_get_bool force "$cfg" force 0
313 dhcp_option_add "$cfg" "$networkid" "$force"
316 dhcp_userclass_add() {
319 config_get networkid "$cfg" networkid
320 [ -n "$networkid" ] || return 0
322 config_get userclass "$cfg" userclass
323 [ -n "$userclass" ] || return 0
325 xappend "--dhcp-userclass=$networkid,$userclass"
327 config_get_bool force "$cfg" force 0
329 dhcp_option_add "$cfg" "$networkid" "$force"
332 dhcp_vendorclass_add() {
335 config_get networkid "$cfg" networkid
336 [ -n "$networkid" ] || return 0
338 config_get vendorclass "$cfg" vendorclass
339 [ -n "$vendorclass" ] || return 0
341 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
343 config_get_bool force "$cfg" force 0
345 dhcp_option_add "$cfg" "$networkid" "$force"
351 config_get_bool force "$cfg" force 0
353 config_get networkid "$cfg" networkid
354 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
356 config_get_bool enable "$cfg" enable 1
357 [ "$enable" = "0" ] && return 0
359 config_get name "$cfg" name
360 config_get ip "$cfg" ip
361 [ -n "$ip" -o -n "$name" ] || return 0
363 config_get_bool dns "$cfg" dns 0
364 [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
365 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
368 config_get mac "$cfg" mac
369 if [ -n "$mac" ]; then
370 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
372 for m in $mac; do append macs "$m" ","; done
374 # --dhcp-host=lap,192.168.0.199
375 [ -n "$name" ] || return 0
380 config_get tag "$cfg" tag
382 if [ "$DHCPv6CAPABLE" -eq 1 ]; then
383 config_get hostid "$cfg" hostid
384 if [ -n "$hostid" ]; then
385 hex_to_hostid hostid "$hostid"
389 config_get_bool broadcast "$cfg" broadcast 0
390 [ "$broadcast" = "0" ] && broadcast=
392 config_get leasetime "$cfg" leasetime
394 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip${hostid:+,[::$hostid]}}${name:+,$name}${leasetime:+,$leasetime}"
402 [ -n "$tag" ] || return 0
404 config_get_bool force "$cfg" force 0
405 [ "$force" = "0" ] && force=
407 config_get option "$cfg" dhcp_option
409 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
416 config_get networkid "$cfg" networkid
417 [ -n "$networkid" ] || return 0
419 config_get mac "$cfg" mac
420 [ -n "$mac" ] || return 0
422 xappend "--dhcp-mac=$networkid,$mac"
424 dhcp_option_add "$cfg" "$networkid"
430 config_get networkid "$cfg" networkid
432 config_get filename "$cfg" filename
433 [ -n "$filename" ] || return 0
435 config_get servername "$cfg" servername
436 config_get serveraddress "$cfg" serveraddress
438 [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
440 xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
442 config_get_bool force "$cfg" force 0
444 dhcp_option_add "$cfg" "$networkid" "$force"
450 config_get net "$cfg" interface
451 [ -n "$net" ] || return 0
453 config_get dhcpv4 "$cfg" dhcpv4
454 [ "$dhcpv4" != "disabled" ] || return 0
456 config_get networkid "$cfg" networkid
457 [ -n "$networkid" ] || networkid="$net"
459 network_get_subnet subnet "$net" || return 0
460 network_get_device ifname "$net" || return 0
461 network_get_protocol proto "$net" || return 0
463 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
464 DNS_SERVERS="$DNS_SERVERS $dnsserver"
467 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
469 # Do not support non-static interfaces for now
470 [ static = "$proto" ] || return 0
472 # Override interface netmask with dhcp config if applicable
473 config_get netmask "$cfg" netmask "${subnet##*/}"
475 #check for an already active dhcp server on the interface, unless 'force' is set
476 config_get_bool force "$cfg" force 0
477 [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
479 config_get start "$cfg" start
480 config_get limit "$cfg" limit
481 config_get leasetime "$cfg" leasetime
482 config_get options "$cfg" options
483 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
485 leasetime="${leasetime:-12h}"
486 start="$(dhcp_calc "${start:-100}")"
487 limit="${limit:-150}"
488 [ "$limit" -gt 0 ] && limit=$((limit-1))
489 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
490 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
491 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
493 dhcp_option_add "$cfg" "$networkid"
501 [ "$force" = "0" ] && force=
503 config_get dhcp_option "$cfg" dhcp_option
504 for o in $dhcp_option; do
505 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
512 local ip name names record
514 config_get names "$cfg" name "$2"
515 [ -n "$names" ] || return 0
517 config_get ip "$cfg" ip "$3"
518 [ -n "$ip" ] || return 0
520 for name in $names; do
521 record="${record:+$record }$name"
524 echo "$ip $record" >> $HOSTFILE
530 config_get srv "$cfg" srv
531 [ -n "$srv" ] || return 0
533 config_get target "$cfg" target
534 [ -n "$target" ] || return 0
536 config_get port "$cfg" port
537 [ -n "$port" ] || return 0
539 config_get class "$cfg" class
540 config_get weight "$cfg" weight
542 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
544 xappend "--srv-host=$service"
549 local domain relay pref
551 config_get domain "$cfg" domain
552 [ -n "$domain" ] || return 0
554 config_get relay "$cfg" relay
555 [ -n "$relay" ] || return 0
557 config_get pref "$cfg" pref 0
559 local service="$domain,$relay,$pref"
561 xappend "--mx-host=$service"
568 config_get cname "$cfg" cname
569 [ -n "$cname" ] || return 0
571 config_get target "$cfg" target
572 [ -n "$target" ] || return 0
574 xappend "--cname=${cname},${target}"
577 dhcp_hostrecord_add() {
579 local names addresses record val
581 config_get names "$cfg" name "$2"
582 if [ -z "$names" ]; then
586 config_get addresses "$cfg" ip "$3"
587 if [ -z "$addresses" ]; then
591 for val in $names $addresses; do
592 record="${record:+$record,}$val"
595 xappend "--host-record=$record"
600 local local_addr server_addr interface
602 config_get local_addr "$cfg" local_addr
603 [ -n "$local_addr" ] || return 0
605 config_get server_addr "$cfg" server_addr
606 [ -n "$server_addr" ] || return 0
608 config_get interface "$cfg" interface
609 if [ -z "$interface" ]; then
610 xappend "--dhcp-relay=$local_addr,$server_addr"
612 xappend "--dhcp-relay=$local_addr,$server_addr,$interface"
618 procd_add_reload_trigger "dhcp"
622 # Will be launched through hotplug
627 include /lib/functions
631 # before we can call xappend
632 mkdir -p /var/run/dnsmasq/
633 mkdir -p $(dirname $CONFIGFILE)
634 mkdir -p /var/lib/misc
635 touch /tmp/dhcp.leases
637 [ -f "$TIMESTAMPFILE" ] && rm -f "$TIMESTAMPFILE"
639 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
640 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
642 # if we did this last, we could override auto-generated config
643 [ -f /etc/dnsmasq.conf ] && {
644 xappend "--conf-file=/etc/dnsmasq.conf"
647 $PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
650 config_foreach dnsmasq dnsmasq
651 config_foreach dhcp_host_add host
652 echo >> $CONFIGFILE_TMP
653 config_foreach dhcp_boot_add boot
654 config_foreach dhcp_mac_add mac
655 config_foreach dhcp_tag_add tag
656 config_foreach dhcp_vendorclass_add vendorclass
657 config_foreach dhcp_userclass_add userclass
658 config_foreach dhcp_circuitid_add circuitid
659 config_foreach dhcp_remoteid_add remoteid
660 config_foreach dhcp_subscrid_add subscrid
661 config_foreach dhcp_domain_add domain
662 config_foreach dhcp_hostrecord_add hostrecord
663 config_foreach dhcp_relay_add relay
666 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && {
667 local lanaddr lanaddr6
668 local ulaprefix="$(uci_get network @globals[0] ula_prefix)"
669 local hostname="$(uci_get system @system[0] hostname Lede)"
671 network_get_ipaddr lanaddr "lan" && {
672 dhcp_domain_add "" "$hostname" "$lanaddr"
675 [ -n "$ulaprefix" ] && network_get_ipaddrs6 lanaddr6 "lan" && {
676 for lanaddr6 in $lanaddr6; do
678 "${ulaprefix%%:/*}"*)
679 dhcp_domain_add "" "$hostname" "$lanaddr6"
686 echo >> $CONFIGFILE_TMP
687 config_foreach dhcp_srv_add srvhost
688 config_foreach dhcp_mx_add mxhost
689 echo >> $CONFIGFILE_TMP
691 config_get odhcpd_is_active odhcpd maindhcp
692 if [ "$odhcpd_is_active" != "1" ]; then
693 config_foreach dhcp_add dhcp
696 echo >> $CONFIGFILE_TMP
697 config_foreach dhcp_cname_add cname
698 echo >> $CONFIGFILE_TMP
699 mv -f $CONFIGFILE_TMP $CONFIGFILE
701 rm -f /tmp/resolv.conf
702 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
703 echo "search $DOMAIN" >> /tmp/resolv.conf
705 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
706 for DNS_SERVER in $DNS_SERVERS ; do
707 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
711 procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq.pid
712 procd_set_param file $CONFIGFILE
713 procd_set_param respawn
715 procd_add_jail dnsmasq ubus log
716 procd_add_jail_mount $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE /etc/passwd /etc/group /etc/TZ /dev/null /dev/urandom /etc/dnsmasq.conf /tmp/dnsmasq.d /tmp/resolv.conf.auto /etc/hosts /etc/ethers $EXTRA_MOUNT
717 procd_add_jail_mount_rw /var/run/dnsmasq/ /tmp/dhcp.leases
723 rc_procd start_service "$@"
728 [ -f /tmp/resolv.conf ] && {
729 rm -f /tmp/resolv.conf
730 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
732 rm -f /var/run/dnsmasq.*.dhcp