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"
76 config_get _loctmp
"$section" "$option"
77 [ -z "$_loctmp" ] && return 0
78 xappend
"$switch=$_loctmp"
86 xappend
"--address=$1"
94 local ifname
=$
(uci_get_state network
"$1" ifname
"$1")
95 xappend
"--interface=$ifname"
98 append_notinterface
() {
99 local ifname
=$
(uci_get_state network
"$1" ifname
"$1")
100 xappend
"--except-interface=$ifname"
104 xappend
"--addn-hosts=$1"
107 append_bogusnxdomain
() {
108 xappend
"--bogus-nxdomain=$1"
111 append_pxe_service
() {
112 xappend
"--pxe-service=$1"
117 append_bool
"$cfg" authoritative
"--dhcp-authoritative"
118 append_bool
"$cfg" nodaemon
"--no-daemon"
119 append_bool
"$cfg" domainneeded
"--domain-needed"
120 append_bool
"$cfg" filterwin2k
"--filterwin2k"
121 append_bool
"$cfg" nohosts
"--no-hosts"
122 append_bool
"$cfg" nonegcache
"--no-negcache"
123 append_bool
"$cfg" strictorder
"--strict-order"
124 append_bool
"$cfg" logqueries
"--log-queries=extra"
125 append_bool
"$cfg" noresolv
"--no-resolv"
126 append_bool
"$cfg" localise_queries
"--localise-queries"
127 append_bool
"$cfg" readethers
"--read-ethers"
128 append_bool
"$cfg" dbus
"--enable-dbus"
129 append_bool
"$cfg" boguspriv
"--bogus-priv"
130 append_bool
"$cfg" expandhosts
"--expand-hosts"
131 append_bool
"$cfg" enable_tftp
"--enable-tftp"
132 append_bool
"$cfg" tftp_no_fail
"--tftp-no-fail"
133 append_bool
"$cfg" nonwildcard
"--bind-interfaces"
134 append_bool
"$cfg" fqdn
"--dhcp-fqdn"
135 append_bool
"$cfg" proxydnssec
"--proxy-dnssec"
136 append_bool
"$cfg" localservice
"--local-service"
137 append_bool
"$cfg" quietdhcp
"--quiet-dhcp"
138 append_bool
"$cfg" sequential_ip
"--dhcp-sequential-ip"
140 append_parm
"$cfg" dhcpscript
"--dhcp-script"
141 append_parm
"$cfg" cachesize
"--cache-size"
142 append_parm
"$cfg" dnsforwardmax
"--dns-forward-max"
143 append_parm
"$cfg" port
"--port"
144 append_parm
"$cfg" ednspacket_max
"--edns-packet-max"
145 append_parm
"$cfg" dhcpleasemax
"--dhcp-lease-max"
146 append_parm
"$cfg" "queryport" "--query-port"
147 append_parm
"$cfg" "domain" "--domain"
148 append_parm
"$cfg" "local" "--server"
149 config_list_foreach
"$cfg" "server" append_server
150 config_list_foreach
"$cfg" "address" append_address
151 config_list_foreach
"$cfg" "ipset" append_ipset
152 config_list_foreach
"$cfg" "interface" append_interface
153 config_list_foreach
"$cfg" "notinterface" append_notinterface
154 config_list_foreach
"$cfg" "addnhosts" append_addnhosts
155 config_list_foreach
"$cfg" "bogusnxdomain" append_bogusnxdomain
156 append_parm
"$cfg" "leasefile" "--dhcp-leasefile"
157 append_parm
"$cfg" "resolvfile" "--resolv-file"
158 append_parm
"$cfg" "serversfile" "--servers-file"
159 append_parm
"$cfg" "tftp_root" "--tftp-root"
160 append_parm
"$cfg" "dhcp_boot" "--dhcp-boot"
161 append_parm
"$cfg" "local_ttl" "--local-ttl"
162 append_parm
"$cfg" "pxe_prompt" "--pxe-prompt"
163 config_list_foreach
"$cfg" "pxe_service" append_pxe_service
164 config_get DOMAIN
"$cfg" domain
166 config_get_bool ADD_LOCAL_DOMAIN
"$cfg" add_local_domain
1
167 config_get_bool ADD_LOCAL_HOSTNAME
"$cfg" add_local_hostname
1
169 config_get_bool readethers
"$cfg" readethers
170 [ "$readethers" = "1" -a \
! -e "/etc/ethers" ] && touch /etc
/ethers
172 config_get leasefile
$cfg leasefile
173 [ -n "$leasefile" -a \
! -e "$leasefile" ] && touch "$leasefile"
174 config_get_bool cachelocal
"$cfg" cachelocal
1
176 config_get hostsfile
"$cfg" dhcphostsfile
177 [ -e "$hostsfile" ] && xappend
"--dhcp-hostsfile=$hostsfile"
179 mkdir
-p /tmp
/hosts
/tmp
/dnsmasq.d
180 xappend
"--addn-hosts=/tmp/hosts"
181 xappend
"--conf-dir=/tmp/dnsmasq.d"
184 config_get_bool rebind
"$cfg" rebind_protection
1
185 [ $rebind -gt 0 ] && {
187 "DNS rebinding protection is active," \
188 "will discard upstream RFC1918 responses!"
189 xappend
"--stop-dns-rebind"
191 local rebind_localhost
192 config_get_bool rebind_localhost
"$cfg" rebind_localhost
0
193 [ $rebind_localhost -gt 0 ] && {
194 log_once
"Allowing 127.0.0.0/8 responses"
195 xappend
"--rebind-localhost-ok"
198 append_rebind_domain
() {
199 log_once
"Allowing RFC1918 responses for domain $1"
200 xappend
"--rebind-domain-ok=$1"
203 config_list_foreach
"$cfg" rebind_domain append_rebind_domain
206 config_get_bool dnssec
"$cfg" dnssec
0
207 [ "$dnssec" -gt 0 ] && {
208 xappend
"--conf-file=$TRUSTANCHORSFILE"
210 xappend
"--dnssec-timestamp=$TIMESTAMPFILE"
211 append_bool
"$cfg" dnsseccheckunsigned
"--dnssec-check-unsigned"
214 dhcp_option_add
"$cfg" "" 0
216 xappend
"--dhcp-broadcast=tag:needs-broadcast"
221 dhcp_subscrid_add
() {
224 config_get networkid
"$cfg" networkid
225 [ -n "$networkid" ] ||
return 0
227 config_get subscriberid
"$cfg" subscriberid
228 [ -n "$subscriberid" ] ||
return 0
230 xappend
"--dhcp-subscrid=$networkid,$subscriberid"
232 config_get_bool force
"$cfg" force
0
234 dhcp_option_add
"$cfg" "$networkid" "$force"
237 dhcp_remoteid_add
() {
240 config_get networkid
"$cfg" networkid
241 [ -n "$networkid" ] ||
return 0
243 config_get remoteid
"$cfg" remoteid
244 [ -n "$remoteid" ] ||
return 0
246 xappend
"--dhcp-remoteid=$networkid,$remoteid"
248 config_get_bool force
"$cfg" force
0
250 dhcp_option_add
"$cfg" "$networkid" "$force"
253 dhcp_circuitid_add
() {
256 config_get networkid
"$cfg" networkid
257 [ -n "$networkid" ] ||
return 0
259 config_get circuitid
"$cfg" circuitid
260 [ -n "$circuitid" ] ||
return 0
262 xappend
"--dhcp-circuitid=$networkid,$circuitid"
264 config_get_bool force
"$cfg" force
0
266 dhcp_option_add
"$cfg" "$networkid" "$force"
269 dhcp_userclass_add
() {
272 config_get networkid
"$cfg" networkid
273 [ -n "$networkid" ] ||
return 0
275 config_get userclass
"$cfg" userclass
276 [ -n "$userclass" ] ||
return 0
278 xappend
"--dhcp-userclass=$networkid,$userclass"
280 config_get_bool force
"$cfg" force
0
282 dhcp_option_add
"$cfg" "$networkid" "$force"
285 dhcp_vendorclass_add
() {
288 config_get networkid
"$cfg" networkid
289 [ -n "$networkid" ] ||
return 0
291 config_get vendorclass
"$cfg" vendorclass
292 [ -n "$vendorclass" ] ||
return 0
294 xappend
"--dhcp-vendorclass=$networkid,$vendorclass"
296 config_get_bool force
"$cfg" force
0
298 dhcp_option_add
"$cfg" "$networkid" "$force"
304 config_get_bool force
"$cfg" force
0
306 config_get networkid
"$cfg" networkid
307 [ -n "$networkid" ] && dhcp_option_add
"$cfg" "$networkid" "$force"
309 config_get name
"$cfg" name
310 config_get ip
"$cfg" ip
311 [ -n "$ip" -o -n "$name" ] ||
return 0
313 config_get_bool dns
"$cfg" dns
0
314 [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
315 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
318 config_get mac
"$cfg" mac
319 if [ -n "$mac" ]; then
320 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
322 for m
in $mac; do append macs
"$m" ","; done
324 # --dhcp-host=lap,192.168.0.199
325 [ -n "$name" ] ||
return 0
330 config_get tag
"$cfg" tag
332 config_get_bool broadcast
"$cfg" broadcast
0
333 [ "$broadcast" = "0" ] && broadcast
=
335 xappend
"--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
343 [ -n "$tag" ] ||
return 0
345 config_get_bool force
"$cfg" force
0
346 [ "$force" = "0" ] && force
=
348 config_get option
"$cfg" dhcp_option
350 xappend
"--dhcp-option${force:+-force}=tag:$tag,$o"
357 config_get networkid
"$cfg" networkid
358 [ -n "$networkid" ] ||
return 0
360 config_get mac
"$cfg" mac
361 [ -n "$mac" ] ||
return 0
363 xappend
"--dhcp-mac=$networkid,$mac"
365 dhcp_option_add
"$cfg" "$networkid"
371 config_get networkid
"$cfg" networkid
373 config_get filename
"$cfg" filename
374 [ -n "$filename" ] ||
return 0
376 config_get servername
"$cfg" servername
377 config_get serveraddress
"$cfg" serveraddress
379 [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
381 xappend
"--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
383 config_get_bool force
"$cfg" force
0
385 dhcp_option_add
"$cfg" "$networkid" "$force"
391 config_get net
"$cfg" interface
392 [ -n "$net" ] ||
return 0
394 config_get dhcpv4
"$cfg" dhcpv4
395 [ "$dhcpv4" != "disabled" ] ||
return 0
397 config_get networkid
"$cfg" networkid
398 [ -n "$networkid" ] || networkid
="$net"
400 network_get_subnet subnet
"$net" ||
return 0
401 network_get_device ifname
"$net" ||
return 0
402 network_get_protocol proto
"$net" ||
return 0
404 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver
"$net" && {
405 DNS_SERVERS
="$DNS_SERVERS $dnsserver"
408 append_bool
"$cfg" ignore
"--no-dhcp-interface=$ifname" && return 0
410 # Do not support non-static interfaces for now
411 [ static
= "$proto" ] ||
return 0
413 # Override interface netmask with dhcp config if applicable
414 config_get netmask
"$cfg" netmask
"${subnet##*/}"
416 #check for an already active dhcp server on the interface, unless 'force' is set
417 config_get_bool force
"$cfg" force
0
418 [ $force -gt 0 ] || dhcp_check
"$ifname" ||
return 0
420 config_get start
"$cfg" start
421 config_get limit
"$cfg" limit
422 config_get leasetime
"$cfg" leasetime
423 config_get options
"$cfg" options
424 config_get_bool dynamicdhcp
"$cfg" dynamicdhcp
1
426 leasetime
="${leasetime:-12h}"
427 start
="$(dhcp_calc "${start:-100}")"
428 limit
="${limit:-150}"
429 [ "$limit" -gt 0 ] && limit
=$
((limit-1
))
430 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
431 if [ "$dynamicdhcp" = "0" ]; then END
="static"; fi
432 xappend
"--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
434 dhcp_option_add
"$cfg" "$networkid"
442 [ "$force" = "0" ] && force
=
444 config_get dhcp_option
"$cfg" dhcp_option
445 for o
in $dhcp_option; do
446 xappend
"--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
453 local ip name names record
455 config_get names
"$cfg" name
"$2"
456 [ -n "$names" ] ||
return 0
458 config_get ip
"$cfg" ip
"$3"
459 [ -n "$ip" ] ||
return 0
461 for name
in $names; do
462 record
="${record:+$record }$name"
465 echo "$ip $record" >> $HOSTFILE
471 config_get srv
"$cfg" srv
472 [ -n "$srv" ] ||
return 0
474 config_get target
"$cfg" target
475 [ -n "$target" ] ||
return 0
477 config_get port
"$cfg" port
478 [ -n "$port" ] ||
return 0
480 config_get class
"$cfg" class
481 config_get weight
"$cfg" weight
483 local service
="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
485 xappend
"--srv-host=$service"
490 local domain relay pref
492 config_get domain
"$cfg" domain
493 [ -n "$domain" ] ||
return 0
495 config_get relay
"$cfg" relay
496 [ -n "$relay" ] ||
return 0
498 config_get pref
"$cfg" pref
0
500 local service
="$domain,$relay,$pref"
502 xappend
"--mx-host=$service"
509 config_get cname
"$cfg" cname
510 [ -n "$cname" ] ||
return 0
512 config_get target
"$cfg" target
513 [ -n "$target" ] ||
return 0
515 xappend
"--cname=${cname},${target}"
518 dhcp_hostrecord_add
() {
520 local names addresses record val
522 config_get names
"$cfg" name
"$2"
523 if [ -z "$names" ]; then
527 config_get addresses
"$cfg" ip
"$3"
528 if [ -z "$addresses" ]; then
532 for val
in $names $addresses; do
533 record
="${record:+$record,}$val"
536 xappend
"--host-record=$record"
541 procd_add_reload_trigger
"dhcp"
545 # Will be launched through hotplug
550 include
/lib
/functions
555 procd_set_param
command $PROG -C $CONFIGFILE -k -x /var
/run
/dnsmasq
/dnsmasq.pid
556 procd_set_param
file $CONFIGFILE
557 procd_set_param respawn
559 procd_add_jail dnsmasq ubus log
560 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
561 procd_add_jail_mount_rw
/var
/run
/dnsmasq
/ /tmp
/dhcp.leases
$TIMESTAMPFILE
565 # before we can call xappend
566 mkdir
-p /var
/run
/dnsmasq
/
567 mkdir
-p $
(dirname $CONFIGFILE)
568 mkdir
-p /var
/lib
/misc
569 touch /tmp
/dhcp.leases
571 if [ ! -f "$TIMESTAMPFILE" ]; then
572 touch "$TIMESTAMPFILE"
573 chown nobody.nogroup
"$TIMESTAMPFILE"
576 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
577 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
579 # if we did this last, we could override auto-generated config
580 [ -f /etc
/dnsmasq.conf
] && {
581 xappend
"--conf-file=/etc/dnsmasq.conf"
585 config_foreach dnsmasq dnsmasq
586 config_foreach dhcp_host_add
host
588 config_foreach dhcp_boot_add boot
589 config_foreach dhcp_mac_add mac
590 config_foreach dhcp_tag_add tag
591 config_foreach dhcp_vendorclass_add vendorclass
592 config_foreach dhcp_userclass_add userclass
593 config_foreach dhcp_circuitid_add circuitid
594 config_foreach dhcp_remoteid_add remoteid
595 config_foreach dhcp_subscrid_add subscrid
596 config_foreach dhcp_domain_add domain
597 config_foreach dhcp_hostrecord_add hostrecord
601 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr
"lan" && {
602 local hostname
="$(uci_get system @system[0] hostname OpenWrt)"
603 dhcp_domain_add
"" "$hostname" "$lanaddr"
607 config_foreach dhcp_srv_add srvhost
608 config_foreach dhcp_mx_add mxhost
611 config_get odhcpd_is_active odhcpd maindhcp
612 if [ "$odhcpd_is_active" != "1" ]; then
613 config_foreach dhcp_add dhcp
617 config_foreach dhcp_cname_add cname
620 rm -f /tmp
/resolv.conf
621 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
622 echo "search $DOMAIN" >> /tmp
/resolv.conf
624 DNS_SERVERS
="$DNS_SERVERS 127.0.0.1"
625 for DNS_SERVER
in $DNS_SERVERS ; do
626 echo "nameserver $DNS_SERVER" >> /tmp
/resolv.conf
631 rc_procd start_service
"$@"
636 [ -f /tmp
/resolv.conf
] && {
637 rm -f /tmp
/resolv.conf
638 ln -s /tmp
/resolv.conf.auto
/tmp
/resolv.conf
640 rm -f /var
/run
/dnsmasq.
*.dhcp