1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2007-2012 OpenWrt.org
15 CONFIGFILE="/var/etc/dnsmasq.conf"
16 HOSTFILE="/tmp/hosts/dhcp"
17 TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
18 TIMESTAMPFILE="/etc/dnsmasq.time"
23 echo "${value#--}" >> $CONFIGFILE
30 while [ -n "$ip" ]; do
33 res="$(($res + $part))"
34 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
41 local stamp="/var/run/dnsmasq.$ifname.dhcp"
44 [ -s "$stamp" ] && return $(cat "$stamp")
46 udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
50 "found already running DHCP-server on interface '$ifname'" \
51 "refusing to start, use 'option force 1' to override"
58 pidof dnsmasq >/dev/null || \
59 logger -t dnsmasq "$@"
67 config_get_bool _loctmp "$section" "$option" 0
68 [ $_loctmp -gt 0 ] && xappend "$value"
77 config_get _loctmp "$section" "$option" "$default"
78 [ -z "$_loctmp" ] && return 0
79 xappend "$switch=$_loctmp"
87 xappend "--address=$1"
95 local ifname=$(uci_get_state network "$1" ifname "$1")
96 xappend "--interface=$ifname"
99 append_notinterface() {
100 local ifname=$(uci_get_state network "$1" ifname "$1")
101 xappend "--except-interface=$ifname"
105 xappend "--addn-hosts=$1"
108 append_bogusnxdomain() {
109 xappend "--bogus-nxdomain=$1"
112 append_pxe_service() {
113 xappend "--pxe-service=$1"
118 append_bool "$cfg" authoritative "--dhcp-authoritative"
119 append_bool "$cfg" nodaemon "--no-daemon"
120 append_bool "$cfg" domainneeded "--domain-needed"
121 append_bool "$cfg" filterwin2k "--filterwin2k"
122 append_bool "$cfg" nohosts "--no-hosts"
123 append_bool "$cfg" nonegcache "--no-negcache"
124 append_bool "$cfg" strictorder "--strict-order"
125 append_bool "$cfg" logqueries "--log-queries=extra"
126 append_bool "$cfg" noresolv "--no-resolv"
127 append_bool "$cfg" localise_queries "--localise-queries"
128 append_bool "$cfg" readethers "--read-ethers"
129 append_bool "$cfg" dbus "--enable-dbus"
130 append_bool "$cfg" boguspriv "--bogus-priv"
131 append_bool "$cfg" expandhosts "--expand-hosts"
132 config_get tftp_root "$cfg" "tftp_root"
133 [ -d "$tftp_root" ] && append_bool "$cfg" enable_tftp "--enable-tftp"
134 append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
135 append_bool "$cfg" nonwildcard "--bind-dynamic"
136 append_bool "$cfg" fqdn "--dhcp-fqdn"
137 append_bool "$cfg" proxydnssec "--proxy-dnssec"
138 append_bool "$cfg" localservice "--local-service"
139 append_bool "$cfg" quietdhcp "--quiet-dhcp"
140 append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
141 append_bool "$cfg" allservers "--all-servers"
142 append_bool "$cfg" noping "--no-ping"
144 append_parm "$cfg" dhcpscript "--dhcp-script"
145 append_parm "$cfg" cachesize "--cache-size"
146 append_parm "$cfg" dnsforwardmax "--dns-forward-max"
147 append_parm "$cfg" port "--port"
148 append_parm "$cfg" ednspacket_max "--edns-packet-max"
149 append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
150 append_parm "$cfg" "queryport" "--query-port"
151 append_parm "$cfg" "minport" "--min-port"
152 append_parm "$cfg" "domain" "--domain"
153 append_parm "$cfg" "local" "--server"
154 config_list_foreach "$cfg" "server" append_server
155 config_list_foreach "$cfg" "address" append_address
156 config_list_foreach "$cfg" "ipset" append_ipset
157 config_list_foreach "$cfg" "interface" append_interface
158 config_list_foreach "$cfg" "notinterface" append_notinterface
159 config_list_foreach "$cfg" "addnhosts" append_addnhosts
160 config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
161 append_parm "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
162 append_parm "$cfg" "resolvfile" "--resolv-file" "/tmp/resolv.conf.auto"
163 append_parm "$cfg" "serversfile" "--servers-file"
164 append_parm "$cfg" "tftp_root" "--tftp-root"
165 append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
166 append_parm "$cfg" "local_ttl" "--local-ttl"
167 append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
168 config_list_foreach "$cfg" "pxe_service" append_pxe_service
169 config_get DOMAIN "$cfg" domain
171 config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
172 config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
174 config_get_bool readethers "$cfg" readethers
175 [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
177 config_get leasefile $cfg leasefile "/tmp/dhcp.leases"
178 [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
179 config_get_bool cachelocal "$cfg" cachelocal 1
181 config_get_bool noresolv "$cfg" noresolv 0
182 if [ "$noresolv" != "1" ]; then
183 config_get resolvfile "$cfg" resolvfile "/tmp/resolv.conf.auto"
184 # So jail doesn't complain if file missing
185 [ -n "$resolvfile" -a \! -e "$resolvfile" ] && touch "$resolvfile"
188 config_get hostsfile "$cfg" dhcphostsfile
189 [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
192 config_get_bool rebind "$cfg" rebind_protection 1
193 [ $rebind -gt 0 ] && {
195 "DNS rebinding protection is active," \
196 "will discard upstream RFC1918 responses!"
197 xappend "--stop-dns-rebind"
199 local rebind_localhost
200 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
201 [ $rebind_localhost -gt 0 ] && {
202 log_once "Allowing 127.0.0.0/8 responses"
203 xappend "--rebind-localhost-ok"
206 append_rebind_domain() {
207 log_once "Allowing RFC1918 responses for domain $1"
208 xappend "--rebind-domain-ok=$1"
211 config_list_foreach "$cfg" rebind_domain append_rebind_domain
214 config_get_bool dnssec "$cfg" dnssec 0
215 [ "$dnssec" -gt 0 ] && {
216 xappend "--conf-file=$TRUSTANCHORSFILE"
218 xappend "--dnssec-timestamp=$TIMESTAMPFILE"
219 append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
222 dhcp_option_add "$cfg" "" 0
224 xappend "--dhcp-broadcast=tag:needs-broadcast"
226 mkdir -p /tmp/hosts /tmp/dnsmasq.d
227 xappend "--addn-hosts=/tmp/hosts"
228 xappend "--conf-dir=/tmp/dnsmasq.d"
229 xappend "--user=dnsmasq"
230 xappend "--group=dnsmasq"
234 config_get_bool enable_tftp "$cfg" enable_tftp 0
235 [ "$enable_tftp" -gt 0 ] && {
236 config_get tftp_root "$cfg" tftp_root
237 append EXTRA_MOUNT $tftp_root
241 dhcp_subscrid_add() {
244 config_get networkid "$cfg" networkid
245 [ -n "$networkid" ] || return 0
247 config_get subscriberid "$cfg" subscriberid
248 [ -n "$subscriberid" ] || return 0
250 xappend "--dhcp-subscrid=$networkid,$subscriberid"
252 config_get_bool force "$cfg" force 0
254 dhcp_option_add "$cfg" "$networkid" "$force"
257 dhcp_remoteid_add() {
260 config_get networkid "$cfg" networkid
261 [ -n "$networkid" ] || return 0
263 config_get remoteid "$cfg" remoteid
264 [ -n "$remoteid" ] || return 0
266 xappend "--dhcp-remoteid=$networkid,$remoteid"
268 config_get_bool force "$cfg" force 0
270 dhcp_option_add "$cfg" "$networkid" "$force"
273 dhcp_circuitid_add() {
276 config_get networkid "$cfg" networkid
277 [ -n "$networkid" ] || return 0
279 config_get circuitid "$cfg" circuitid
280 [ -n "$circuitid" ] || return 0
282 xappend "--dhcp-circuitid=$networkid,$circuitid"
284 config_get_bool force "$cfg" force 0
286 dhcp_option_add "$cfg" "$networkid" "$force"
289 dhcp_userclass_add() {
292 config_get networkid "$cfg" networkid
293 [ -n "$networkid" ] || return 0
295 config_get userclass "$cfg" userclass
296 [ -n "$userclass" ] || return 0
298 xappend "--dhcp-userclass=$networkid,$userclass"
300 config_get_bool force "$cfg" force 0
302 dhcp_option_add "$cfg" "$networkid" "$force"
305 dhcp_vendorclass_add() {
308 config_get networkid "$cfg" networkid
309 [ -n "$networkid" ] || return 0
311 config_get vendorclass "$cfg" vendorclass
312 [ -n "$vendorclass" ] || return 0
314 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
316 config_get_bool force "$cfg" force 0
318 dhcp_option_add "$cfg" "$networkid" "$force"
324 config_get_bool force "$cfg" force 0
326 config_get networkid "$cfg" networkid
327 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
329 config_get_bool enable "$cfg" enable 1
330 [ "$enable" = "0" ] && return 0
332 config_get name "$cfg" name
333 config_get ip "$cfg" ip
334 [ -n "$ip" -o -n "$name" ] || return 0
336 config_get_bool dns "$cfg" dns 0
337 [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
338 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
341 config_get mac "$cfg" mac
342 if [ -n "$mac" ]; then
343 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
345 for m in $mac; do append macs "$m" ","; done
347 # --dhcp-host=lap,192.168.0.199
348 [ -n "$name" ] || return 0
353 config_get tag "$cfg" tag
355 config_get_bool broadcast "$cfg" broadcast 0
356 [ "$broadcast" = "0" ] && broadcast=
358 config_get leasetime "$cfg" leasetime
360 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}${leasetime:+,$leasetime}"
368 [ -n "$tag" ] || return 0
370 config_get_bool force "$cfg" force 0
371 [ "$force" = "0" ] && force=
373 config_get option "$cfg" dhcp_option
375 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
382 config_get networkid "$cfg" networkid
383 [ -n "$networkid" ] || return 0
385 config_get mac "$cfg" mac
386 [ -n "$mac" ] || return 0
388 xappend "--dhcp-mac=$networkid,$mac"
390 dhcp_option_add "$cfg" "$networkid"
396 config_get networkid "$cfg" networkid
398 config_get filename "$cfg" filename
399 [ -n "$filename" ] || return 0
401 config_get servername "$cfg" servername
402 config_get serveraddress "$cfg" serveraddress
404 [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
406 xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
408 config_get_bool force "$cfg" force 0
410 dhcp_option_add "$cfg" "$networkid" "$force"
416 config_get net "$cfg" interface
417 [ -n "$net" ] || return 0
419 config_get dhcpv4 "$cfg" dhcpv4
420 [ "$dhcpv4" != "disabled" ] || return 0
422 config_get networkid "$cfg" networkid
423 [ -n "$networkid" ] || networkid="$net"
425 network_get_subnet subnet "$net" || return 0
426 network_get_device ifname "$net" || return 0
427 network_get_protocol proto "$net" || return 0
429 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
430 DNS_SERVERS="$DNS_SERVERS $dnsserver"
433 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
435 # Do not support non-static interfaces for now
436 [ static = "$proto" ] || return 0
438 # Override interface netmask with dhcp config if applicable
439 config_get netmask "$cfg" netmask "${subnet##*/}"
441 #check for an already active dhcp server on the interface, unless 'force' is set
442 config_get_bool force "$cfg" force 0
443 [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
445 config_get start "$cfg" start
446 config_get limit "$cfg" limit
447 config_get leasetime "$cfg" leasetime
448 config_get options "$cfg" options
449 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
451 leasetime="${leasetime:-12h}"
452 start="$(dhcp_calc "${start:-100}")"
453 limit="${limit:-150}"
454 [ "$limit" -gt 0 ] && limit=$((limit-1))
455 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
456 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
457 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
459 dhcp_option_add "$cfg" "$networkid"
467 [ "$force" = "0" ] && force=
469 config_get dhcp_option "$cfg" dhcp_option
470 for o in $dhcp_option; do
471 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
478 local ip name names record
480 config_get names "$cfg" name "$2"
481 [ -n "$names" ] || return 0
483 config_get ip "$cfg" ip "$3"
484 [ -n "$ip" ] || return 0
486 for name in $names; do
487 record="${record:+$record }$name"
490 echo "$ip $record" >> $HOSTFILE
496 config_get srv "$cfg" srv
497 [ -n "$srv" ] || return 0
499 config_get target "$cfg" target
500 [ -n "$target" ] || return 0
502 config_get port "$cfg" port
503 [ -n "$port" ] || return 0
505 config_get class "$cfg" class
506 config_get weight "$cfg" weight
508 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
510 xappend "--srv-host=$service"
515 local domain relay pref
517 config_get domain "$cfg" domain
518 [ -n "$domain" ] || return 0
520 config_get relay "$cfg" relay
521 [ -n "$relay" ] || return 0
523 config_get pref "$cfg" pref 0
525 local service="$domain,$relay,$pref"
527 xappend "--mx-host=$service"
534 config_get cname "$cfg" cname
535 [ -n "$cname" ] || return 0
537 config_get target "$cfg" target
538 [ -n "$target" ] || return 0
540 xappend "--cname=${cname},${target}"
543 dhcp_hostrecord_add() {
545 local names addresses record val
547 config_get names "$cfg" name "$2"
548 if [ -z "$names" ]; then
552 config_get addresses "$cfg" ip "$3"
553 if [ -z "$addresses" ]; then
557 for val in $names $addresses; do
558 record="${record:+$record,}$val"
561 xappend "--host-record=$record"
566 local local_addr server_addr interface
568 config_get local_addr "$cfg" local_addr
569 [ -n "$local_addr" ] || return 0
571 config_get server_addr "$cfg" server_addr
572 [ -n "$server_addr" ] || return 0
574 config_get interface "$cfg" interface
575 if [ -z "$interface" ]; then
576 xappend "--dhcp-relay=$local_addr,$server_addr"
578 xappend "--dhcp-relay=$local_addr,$server_addr,$interface"
584 procd_add_reload_trigger "dhcp"
588 # Will be launched through hotplug
593 include /lib/functions
597 # before we can call xappend
598 mkdir -p /var/run/dnsmasq/
599 mkdir -p $(dirname $CONFIGFILE)
600 mkdir -p /var/lib/misc
601 touch /tmp/dhcp.leases
603 if [ ! -f "$TIMESTAMPFILE" ]; then
604 touch "$TIMESTAMPFILE"
605 chown dnsmasq.dnsmasq "$TIMESTAMPFILE"
608 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
609 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
611 # if we did this last, we could override auto-generated config
612 [ -f /etc/dnsmasq.conf ] && {
613 xappend "--conf-file=/etc/dnsmasq.conf"
617 config_foreach dnsmasq dnsmasq
618 config_foreach dhcp_host_add host
620 config_foreach dhcp_boot_add boot
621 config_foreach dhcp_mac_add mac
622 config_foreach dhcp_tag_add tag
623 config_foreach dhcp_vendorclass_add vendorclass
624 config_foreach dhcp_userclass_add userclass
625 config_foreach dhcp_circuitid_add circuitid
626 config_foreach dhcp_remoteid_add remoteid
627 config_foreach dhcp_subscrid_add subscrid
628 config_foreach dhcp_domain_add domain
629 config_foreach dhcp_hostrecord_add hostrecord
630 config_foreach dhcp_relay_add relay
633 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && {
634 local lanaddr lanaddr6
635 local ulaprefix="$(uci_get network @globals[0] ula_prefix)"
636 local hostname="$(uci_get system @system[0] hostname Lede)"
638 network_get_ipaddr lanaddr "lan" && {
639 dhcp_domain_add "" "$hostname" "$lanaddr"
642 [ -n "$ulaprefix" ] && network_get_ipaddrs6 lanaddr6 "lan" && {
643 for lanaddr6 in $lanaddr6; do
645 "${ulaprefix%%:/*}"*)
646 dhcp_domain_add "" "$hostname" "$lanaddr6"
654 config_foreach dhcp_srv_add srvhost
655 config_foreach dhcp_mx_add mxhost
658 config_get odhcpd_is_active odhcpd maindhcp
659 if [ "$odhcpd_is_active" != "1" ]; then
660 config_foreach dhcp_add dhcp
664 config_foreach dhcp_cname_add cname
667 rm -f /tmp/resolv.conf
668 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
669 echo "search $DOMAIN" >> /tmp/resolv.conf
671 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
672 for DNS_SERVER in $DNS_SERVERS ; do
673 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
677 procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq.pid
678 procd_set_param file $CONFIGFILE
679 procd_set_param respawn
681 procd_add_jail dnsmasq ubus log
682 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
683 procd_add_jail_mount_rw /var/run/dnsmasq/ /tmp/dhcp.leases $TIMESTAMPFILE
689 rc_procd start_service "$@"
694 [ -f /tmp/resolv.conf ] && {
695 rm -f /tmp/resolv.conf
696 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
698 rm -f /var/run/dnsmasq.*.dhcp