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" "maxport" "--max-port"
153 append_parm
"$cfg" "domain" "--domain"
154 append_parm
"$cfg" "local" "--server"
155 config_list_foreach
"$cfg" "server" append_server
156 config_list_foreach
"$cfg" "address" append_address
157 config_list_foreach
"$cfg" "ipset" append_ipset
158 config_list_foreach
"$cfg" "interface" append_interface
159 config_list_foreach
"$cfg" "notinterface" append_notinterface
160 config_list_foreach
"$cfg" "addnhosts" append_addnhosts
161 config_list_foreach
"$cfg" "bogusnxdomain" append_bogusnxdomain
162 append_parm
"$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
163 append_parm
"$cfg" "resolvfile" "--resolv-file" "/tmp/resolv.conf.auto"
164 append_parm
"$cfg" "serversfile" "--servers-file"
165 append_parm
"$cfg" "tftp_root" "--tftp-root"
166 append_parm
"$cfg" "dhcp_boot" "--dhcp-boot"
167 append_parm
"$cfg" "local_ttl" "--local-ttl"
168 append_parm
"$cfg" "pxe_prompt" "--pxe-prompt"
169 config_list_foreach
"$cfg" "pxe_service" append_pxe_service
170 config_get DOMAIN
"$cfg" domain
172 config_get_bool ADD_LOCAL_DOMAIN
"$cfg" add_local_domain
1
173 config_get_bool ADD_LOCAL_HOSTNAME
"$cfg" add_local_hostname
1
175 config_get_bool readethers
"$cfg" readethers
176 [ "$readethers" = "1" -a \
! -e "/etc/ethers" ] && touch /etc
/ethers
178 config_get leasefile
$cfg leasefile
"/tmp/dhcp.leases"
179 [ -n "$leasefile" -a \
! -e "$leasefile" ] && touch "$leasefile"
180 config_get_bool cachelocal
"$cfg" cachelocal
1
182 config_get_bool noresolv
"$cfg" noresolv
0
183 if [ "$noresolv" != "1" ]; then
184 config_get resolvfile
"$cfg" resolvfile
"/tmp/resolv.conf.auto"
185 # So jail doesn't complain if file missing
186 [ -n "$resolvfile" -a \
! -e "$resolvfile" ] && touch "$resolvfile"
189 config_get hostsfile
"$cfg" dhcphostsfile
190 [ -e "$hostsfile" ] && xappend
"--dhcp-hostsfile=$hostsfile"
193 config_get_bool rebind
"$cfg" rebind_protection
1
194 [ $rebind -gt 0 ] && {
196 "DNS rebinding protection is active," \
197 "will discard upstream RFC1918 responses!"
198 xappend
"--stop-dns-rebind"
200 local rebind_localhost
201 config_get_bool rebind_localhost
"$cfg" rebind_localhost
0
202 [ $rebind_localhost -gt 0 ] && {
203 log_once
"Allowing 127.0.0.0/8 responses"
204 xappend
"--rebind-localhost-ok"
207 append_rebind_domain
() {
208 log_once
"Allowing RFC1918 responses for domain $1"
209 xappend
"--rebind-domain-ok=$1"
212 config_list_foreach
"$cfg" rebind_domain append_rebind_domain
215 config_get_bool dnssec
"$cfg" dnssec
0
216 [ "$dnssec" -gt 0 ] && {
217 xappend
"--conf-file=$TRUSTANCHORSFILE"
219 xappend
"--dnssec-timestamp=$TIMESTAMPFILE"
220 append_bool
"$cfg" dnsseccheckunsigned
"--dnssec-check-unsigned"
223 dhcp_option_add
"$cfg" "" 0
225 xappend
"--dhcp-broadcast=tag:needs-broadcast"
227 mkdir
-p /tmp
/hosts
/tmp
/dnsmasq.d
228 xappend
"--addn-hosts=/tmp/hosts"
229 xappend
"--conf-dir=/tmp/dnsmasq.d"
230 xappend
"--user=dnsmasq"
231 xappend
"--group=dnsmasq"
235 config_get_bool enable_tftp
"$cfg" enable_tftp
0
236 [ "$enable_tftp" -gt 0 ] && {
237 config_get tftp_root
"$cfg" tftp_root
238 append EXTRA_MOUNT
$tftp_root
242 dhcp_subscrid_add
() {
245 config_get networkid
"$cfg" networkid
246 [ -n "$networkid" ] ||
return 0
248 config_get subscriberid
"$cfg" subscriberid
249 [ -n "$subscriberid" ] ||
return 0
251 xappend
"--dhcp-subscrid=$networkid,$subscriberid"
253 config_get_bool force
"$cfg" force
0
255 dhcp_option_add
"$cfg" "$networkid" "$force"
258 dhcp_remoteid_add
() {
261 config_get networkid
"$cfg" networkid
262 [ -n "$networkid" ] ||
return 0
264 config_get remoteid
"$cfg" remoteid
265 [ -n "$remoteid" ] ||
return 0
267 xappend
"--dhcp-remoteid=$networkid,$remoteid"
269 config_get_bool force
"$cfg" force
0
271 dhcp_option_add
"$cfg" "$networkid" "$force"
274 dhcp_circuitid_add
() {
277 config_get networkid
"$cfg" networkid
278 [ -n "$networkid" ] ||
return 0
280 config_get circuitid
"$cfg" circuitid
281 [ -n "$circuitid" ] ||
return 0
283 xappend
"--dhcp-circuitid=$networkid,$circuitid"
285 config_get_bool force
"$cfg" force
0
287 dhcp_option_add
"$cfg" "$networkid" "$force"
290 dhcp_userclass_add
() {
293 config_get networkid
"$cfg" networkid
294 [ -n "$networkid" ] ||
return 0
296 config_get userclass
"$cfg" userclass
297 [ -n "$userclass" ] ||
return 0
299 xappend
"--dhcp-userclass=$networkid,$userclass"
301 config_get_bool force
"$cfg" force
0
303 dhcp_option_add
"$cfg" "$networkid" "$force"
306 dhcp_vendorclass_add
() {
309 config_get networkid
"$cfg" networkid
310 [ -n "$networkid" ] ||
return 0
312 config_get vendorclass
"$cfg" vendorclass
313 [ -n "$vendorclass" ] ||
return 0
315 xappend
"--dhcp-vendorclass=$networkid,$vendorclass"
317 config_get_bool force
"$cfg" force
0
319 dhcp_option_add
"$cfg" "$networkid" "$force"
325 config_get_bool force
"$cfg" force
0
327 config_get networkid
"$cfg" networkid
328 [ -n "$networkid" ] && dhcp_option_add
"$cfg" "$networkid" "$force"
330 config_get_bool
enable "$cfg" enable 1
331 [ "$enable" = "0" ] && return 0
333 config_get name
"$cfg" name
334 config_get ip
"$cfg" ip
335 [ -n "$ip" -o -n "$name" ] ||
return 0
337 config_get_bool dns
"$cfg" dns
0
338 [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
339 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
342 config_get mac
"$cfg" mac
343 if [ -n "$mac" ]; then
344 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
346 for m
in $mac; do append macs
"$m" ","; done
348 # --dhcp-host=lap,192.168.0.199
349 [ -n "$name" ] ||
return 0
354 config_get tag
"$cfg" tag
356 config_get_bool broadcast
"$cfg" broadcast
0
357 [ "$broadcast" = "0" ] && broadcast
=
359 config_get leasetime
"$cfg" leasetime
361 xappend
"--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}${leasetime:+,$leasetime}"
369 [ -n "$tag" ] ||
return 0
371 config_get_bool force
"$cfg" force
0
372 [ "$force" = "0" ] && force
=
374 config_get option
"$cfg" dhcp_option
376 xappend
"--dhcp-option${force:+-force}=tag:$tag,$o"
383 config_get networkid
"$cfg" networkid
384 [ -n "$networkid" ] ||
return 0
386 config_get mac
"$cfg" mac
387 [ -n "$mac" ] ||
return 0
389 xappend
"--dhcp-mac=$networkid,$mac"
391 dhcp_option_add
"$cfg" "$networkid"
397 config_get networkid
"$cfg" networkid
399 config_get filename
"$cfg" filename
400 [ -n "$filename" ] ||
return 0
402 config_get servername
"$cfg" servername
403 config_get serveraddress
"$cfg" serveraddress
405 [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
407 xappend
"--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
409 config_get_bool force
"$cfg" force
0
411 dhcp_option_add
"$cfg" "$networkid" "$force"
417 config_get net
"$cfg" interface
418 [ -n "$net" ] ||
return 0
420 config_get dhcpv4
"$cfg" dhcpv4
421 [ "$dhcpv4" != "disabled" ] ||
return 0
423 config_get networkid
"$cfg" networkid
424 [ -n "$networkid" ] || networkid
="$net"
426 network_get_subnet subnet
"$net" ||
return 0
427 network_get_device ifname
"$net" ||
return 0
428 network_get_protocol proto
"$net" ||
return 0
430 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver
"$net" && {
431 DNS_SERVERS
="$DNS_SERVERS $dnsserver"
434 append_bool
"$cfg" ignore
"--no-dhcp-interface=$ifname" && return 0
436 # Do not support non-static interfaces for now
437 [ static
= "$proto" ] ||
return 0
439 # Override interface netmask with dhcp config if applicable
440 config_get netmask
"$cfg" netmask
"${subnet##*/}"
442 #check for an already active dhcp server on the interface, unless 'force' is set
443 config_get_bool force
"$cfg" force
0
444 [ $force -gt 0 ] || dhcp_check
"$ifname" ||
return 0
446 config_get start
"$cfg" start
447 config_get limit
"$cfg" limit
448 config_get leasetime
"$cfg" leasetime
449 config_get options
"$cfg" options
450 config_get_bool dynamicdhcp
"$cfg" dynamicdhcp
1
452 leasetime
="${leasetime:-12h}"
453 start
="$(dhcp_calc "${start:-100}")"
454 limit
="${limit:-150}"
455 [ "$limit" -gt 0 ] && limit
=$
((limit-1
))
456 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
457 if [ "$dynamicdhcp" = "0" ]; then END
="static"; fi
458 xappend
"--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
460 dhcp_option_add
"$cfg" "$networkid"
468 [ "$force" = "0" ] && force
=
470 config_get dhcp_option
"$cfg" dhcp_option
471 for o
in $dhcp_option; do
472 xappend
"--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
479 local ip name names record
481 config_get names
"$cfg" name
"$2"
482 [ -n "$names" ] ||
return 0
484 config_get ip
"$cfg" ip
"$3"
485 [ -n "$ip" ] ||
return 0
487 for name
in $names; do
488 record
="${record:+$record }$name"
491 echo "$ip $record" >> $HOSTFILE
497 config_get srv
"$cfg" srv
498 [ -n "$srv" ] ||
return 0
500 config_get target
"$cfg" target
501 [ -n "$target" ] ||
return 0
503 config_get port
"$cfg" port
504 [ -n "$port" ] ||
return 0
506 config_get class
"$cfg" class
507 config_get weight
"$cfg" weight
509 local service
="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
511 xappend
"--srv-host=$service"
516 local domain relay pref
518 config_get domain
"$cfg" domain
519 [ -n "$domain" ] ||
return 0
521 config_get relay
"$cfg" relay
522 [ -n "$relay" ] ||
return 0
524 config_get pref
"$cfg" pref
0
526 local service
="$domain,$relay,$pref"
528 xappend
"--mx-host=$service"
535 config_get cname
"$cfg" cname
536 [ -n "$cname" ] ||
return 0
538 config_get target
"$cfg" target
539 [ -n "$target" ] ||
return 0
541 xappend
"--cname=${cname},${target}"
544 dhcp_hostrecord_add
() {
546 local names addresses record val
548 config_get names
"$cfg" name
"$2"
549 if [ -z "$names" ]; then
553 config_get addresses
"$cfg" ip
"$3"
554 if [ -z "$addresses" ]; then
558 for val
in $names $addresses; do
559 record
="${record:+$record,}$val"
562 xappend
"--host-record=$record"
567 local local_addr server_addr interface
569 config_get local_addr
"$cfg" local_addr
570 [ -n "$local_addr" ] ||
return 0
572 config_get server_addr
"$cfg" server_addr
573 [ -n "$server_addr" ] ||
return 0
575 config_get interface
"$cfg" interface
576 if [ -z "$interface" ]; then
577 xappend
"--dhcp-relay=$local_addr,$server_addr"
579 xappend
"--dhcp-relay=$local_addr,$server_addr,$interface"
585 procd_add_reload_trigger
"dhcp"
589 # Will be launched through hotplug
594 include
/lib
/functions
598 # before we can call xappend
599 mkdir
-p /var
/run
/dnsmasq
/
600 mkdir
-p $
(dirname $CONFIGFILE)
601 mkdir
-p /var
/lib
/misc
602 touch /tmp
/dhcp.leases
604 if [ ! -f "$TIMESTAMPFILE" ]; then
605 touch "$TIMESTAMPFILE"
606 chown dnsmasq.dnsmasq
"$TIMESTAMPFILE"
609 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
610 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
612 # if we did this last, we could override auto-generated config
613 [ -f /etc
/dnsmasq.conf
] && {
614 xappend
"--conf-file=/etc/dnsmasq.conf"
618 config_foreach dnsmasq dnsmasq
619 config_foreach dhcp_host_add
host
621 config_foreach dhcp_boot_add boot
622 config_foreach dhcp_mac_add mac
623 config_foreach dhcp_tag_add tag
624 config_foreach dhcp_vendorclass_add vendorclass
625 config_foreach dhcp_userclass_add userclass
626 config_foreach dhcp_circuitid_add circuitid
627 config_foreach dhcp_remoteid_add remoteid
628 config_foreach dhcp_subscrid_add subscrid
629 config_foreach dhcp_domain_add domain
630 config_foreach dhcp_hostrecord_add hostrecord
631 config_foreach dhcp_relay_add relay
634 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && {
635 local lanaddr lanaddr6
636 local ulaprefix
="$(uci_get network @globals[0] ula_prefix)"
637 local hostname
="$(uci_get system @system[0] hostname Lede)"
639 network_get_ipaddr lanaddr
"lan" && {
640 dhcp_domain_add
"" "$hostname" "$lanaddr"
643 [ -n "$ulaprefix" ] && network_get_ipaddrs6 lanaddr6
"lan" && {
644 for lanaddr6
in $lanaddr6; do
646 "${ulaprefix%%:/*}"*)
647 dhcp_domain_add
"" "$hostname" "$lanaddr6"
655 config_foreach dhcp_srv_add srvhost
656 config_foreach dhcp_mx_add mxhost
659 config_get odhcpd_is_active odhcpd maindhcp
660 if [ "$odhcpd_is_active" != "1" ]; then
661 config_foreach dhcp_add dhcp
665 config_foreach dhcp_cname_add cname
668 rm -f /tmp
/resolv.conf
669 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
670 echo "search $DOMAIN" >> /tmp
/resolv.conf
672 DNS_SERVERS
="$DNS_SERVERS 127.0.0.1"
673 for DNS_SERVER
in $DNS_SERVERS ; do
674 echo "nameserver $DNS_SERVER" >> /tmp
/resolv.conf
678 procd_set_param
command $PROG -C $CONFIGFILE -k -x /var
/run
/dnsmasq
/dnsmasq.pid
679 procd_set_param
file $CONFIGFILE
680 procd_set_param respawn
682 procd_add_jail dnsmasq ubus log
683 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
684 procd_add_jail_mount_rw
/var
/run
/dnsmasq
/ /tmp
/dhcp.leases
$TIMESTAMPFILE
690 rc_procd start_service
"$@"
695 [ -f /tmp
/resolv.conf
] && {
696 rm -f /tmp
/resolv.conf
697 ln -s /tmp
/resolv.conf.auto
/tmp
/resolv.conf
699 rm -f /var
/run
/dnsmasq.
*.dhcp