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"
139 append_parm
"$cfg" dhcpscript
"--dhcp-script"
140 append_parm
"$cfg" cachesize
"--cache-size"
141 append_parm
"$cfg" dnsforwardmax
"--dns-forward-max"
142 append_parm
"$cfg" port
"--port"
143 append_parm
"$cfg" ednspacket_max
"--edns-packet-max"
144 append_parm
"$cfg" dhcpleasemax
"--dhcp-lease-max"
145 append_parm
"$cfg" "queryport" "--query-port"
146 append_parm
"$cfg" "domain" "--domain"
147 append_parm
"$cfg" "local" "--server"
148 config_list_foreach
"$cfg" "server" append_server
149 config_list_foreach
"$cfg" "address" append_address
150 config_list_foreach
"$cfg" "ipset" append_ipset
151 config_list_foreach
"$cfg" "interface" append_interface
152 config_list_foreach
"$cfg" "notinterface" append_notinterface
153 config_list_foreach
"$cfg" "addnhosts" append_addnhosts
154 config_list_foreach
"$cfg" "bogusnxdomain" append_bogusnxdomain
155 append_parm
"$cfg" "leasefile" "--dhcp-leasefile"
156 append_parm
"$cfg" "resolvfile" "--resolv-file"
157 append_parm
"$cfg" "serversfile" "--servers-file"
158 append_parm
"$cfg" "tftp_root" "--tftp-root"
159 append_parm
"$cfg" "dhcp_boot" "--dhcp-boot"
160 append_parm
"$cfg" "local_ttl" "--local-ttl"
161 append_parm
"$cfg" "pxe_prompt" "--pxe-prompt"
162 config_list_foreach
"$cfg" "pxe_service" append_pxe_service
163 config_get DOMAIN
"$cfg" domain
165 config_get_bool ADD_LOCAL_DOMAIN
"$cfg" add_local_domain
1
166 config_get_bool ADD_LOCAL_HOSTNAME
"$cfg" add_local_hostname
1
168 config_get_bool readethers
"$cfg" readethers
169 [ "$readethers" = "1" -a \
! -e "/etc/ethers" ] && touch /etc
/ethers
171 config_get leasefile
$cfg leasefile
172 [ -n "$leasefile" -a \
! -e "$leasefile" ] && touch "$leasefile"
173 config_get_bool cachelocal
"$cfg" cachelocal
1
175 config_get hostsfile
"$cfg" dhcphostsfile
176 [ -e "$hostsfile" ] && xappend
"--dhcp-hostsfile=$hostsfile"
178 mkdir
-p /tmp
/hosts
/tmp
/dnsmasq.d
179 xappend
"--addn-hosts=/tmp/hosts"
180 xappend
"--conf-dir=/tmp/dnsmasq.d"
183 config_get_bool rebind
"$cfg" rebind_protection
1
184 [ $rebind -gt 0 ] && {
186 "DNS rebinding protection is active," \
187 "will discard upstream RFC1918 responses!"
188 xappend
"--stop-dns-rebind"
190 local rebind_localhost
191 config_get_bool rebind_localhost
"$cfg" rebind_localhost
0
192 [ $rebind_localhost -gt 0 ] && {
193 log_once
"Allowing 127.0.0.0/8 responses"
194 xappend
"--rebind-localhost-ok"
197 append_rebind_domain
() {
198 log_once
"Allowing RFC1918 responses for domain $1"
199 xappend
"--rebind-domain-ok=$1"
202 config_list_foreach
"$cfg" rebind_domain append_rebind_domain
205 config_get_bool dnssec
"$cfg" dnssec
0
206 [ "$dnssec" -gt 0 ] && {
207 xappend
"--conf-file=$TRUSTANCHORSFILE"
209 xappend
"--dnssec-timestamp=$TIMESTAMPFILE"
210 append_bool
"$cfg" dnsseccheckunsigned
"--dnssec-check-unsigned"
213 dhcp_option_add
"$cfg" "" 0
215 xappend
"--dhcp-broadcast=tag:needs-broadcast"
220 dhcp_subscrid_add
() {
223 config_get networkid
"$cfg" networkid
224 [ -n "$networkid" ] ||
return 0
226 config_get subscriberid
"$cfg" subscriberid
227 [ -n "$subscriberid" ] ||
return 0
229 xappend
"--dhcp-subscrid=$networkid,$subscriberid"
231 config_get_bool force
"$cfg" force
0
233 dhcp_option_add
"$cfg" "$networkid" "$force"
236 dhcp_remoteid_add
() {
239 config_get networkid
"$cfg" networkid
240 [ -n "$networkid" ] ||
return 0
242 config_get remoteid
"$cfg" remoteid
243 [ -n "$remoteid" ] ||
return 0
245 xappend
"--dhcp-remoteid=$networkid,$remoteid"
247 config_get_bool force
"$cfg" force
0
249 dhcp_option_add
"$cfg" "$networkid" "$force"
252 dhcp_circuitid_add
() {
255 config_get networkid
"$cfg" networkid
256 [ -n "$networkid" ] ||
return 0
258 config_get circuitid
"$cfg" circuitid
259 [ -n "$circuitid" ] ||
return 0
261 xappend
"--dhcp-circuitid=$networkid,$circuitid"
263 config_get_bool force
"$cfg" force
0
265 dhcp_option_add
"$cfg" "$networkid" "$force"
268 dhcp_userclass_add
() {
271 config_get networkid
"$cfg" networkid
272 [ -n "$networkid" ] ||
return 0
274 config_get userclass
"$cfg" userclass
275 [ -n "$userclass" ] ||
return 0
277 xappend
"--dhcp-userclass=$networkid,$userclass"
279 config_get_bool force
"$cfg" force
0
281 dhcp_option_add
"$cfg" "$networkid" "$force"
284 dhcp_vendorclass_add
() {
287 config_get networkid
"$cfg" networkid
288 [ -n "$networkid" ] ||
return 0
290 config_get vendorclass
"$cfg" vendorclass
291 [ -n "$vendorclass" ] ||
return 0
293 xappend
"--dhcp-vendorclass=$networkid,$vendorclass"
295 config_get_bool force
"$cfg" force
0
297 dhcp_option_add
"$cfg" "$networkid" "$force"
303 config_get_bool force
"$cfg" force
0
305 config_get networkid
"$cfg" networkid
306 [ -n "$networkid" ] && dhcp_option_add
"$cfg" "$networkid" "$force"
308 config_get name
"$cfg" name
309 config_get ip
"$cfg" ip
310 [ -n "$ip" -o -n "$name" ] ||
return 0
312 config_get_bool dns
"$cfg" dns
0
313 [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
314 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
317 config_get mac
"$cfg" mac
318 if [ -n "$mac" ]; then
319 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
321 for m
in $mac; do append macs
"$m" ","; done
323 # --dhcp-host=lap,192.168.0.199
324 [ -n "$name" ] ||
return 0
329 config_get tag
"$cfg" tag
331 config_get_bool broadcast
"$cfg" broadcast
0
332 [ "$broadcast" = "0" ] && broadcast
=
334 xappend
"--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
342 [ -n "$tag" ] ||
return 0
344 config_get_bool force
"$cfg" force
0
345 [ "$force" = "0" ] && force
=
347 config_get option
"$cfg" dhcp_option
349 xappend
"--dhcp-option${force:+-force}=tag:$tag,$o"
356 config_get networkid
"$cfg" networkid
357 [ -n "$networkid" ] ||
return 0
359 config_get mac
"$cfg" mac
360 [ -n "$mac" ] ||
return 0
362 xappend
"--dhcp-mac=$networkid,$mac"
364 dhcp_option_add
"$cfg" "$networkid"
370 config_get networkid
"$cfg" networkid
372 config_get filename
"$cfg" filename
373 [ -n "$filename" ] ||
return 0
375 config_get servername
"$cfg" servername
376 config_get serveraddress
"$cfg" serveraddress
378 [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
380 xappend
"--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
382 config_get_bool force
"$cfg" force
0
384 dhcp_option_add
"$cfg" "$networkid" "$force"
390 config_get net
"$cfg" interface
391 [ -n "$net" ] ||
return 0
393 config_get dhcpv4
"$cfg" dhcpv4
394 [ "$dhcpv4" != "disabled" ] ||
return 0
396 config_get networkid
"$cfg" networkid
397 [ -n "$networkid" ] || networkid
="$net"
399 network_get_subnet subnet
"$net" ||
return 0
400 network_get_device ifname
"$net" ||
return 0
401 network_get_protocol proto
"$net" ||
return 0
403 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver
"$net" && {
404 DNS_SERVERS
="$DNS_SERVERS $dnsserver"
407 append_bool
"$cfg" ignore
"--no-dhcp-interface=$ifname" && return 0
409 # Do not support non-static interfaces for now
410 [ static
= "$proto" ] ||
return 0
412 # Override interface netmask with dhcp config if applicable
413 config_get netmask
"$cfg" netmask
"${subnet##*/}"
415 #check for an already active dhcp server on the interface, unless 'force' is set
416 config_get_bool force
"$cfg" force
0
417 [ $force -gt 0 ] || dhcp_check
"$ifname" ||
return 0
419 config_get start
"$cfg" start
420 config_get limit
"$cfg" limit
421 config_get leasetime
"$cfg" leasetime
422 config_get options
"$cfg" options
423 config_get_bool dynamicdhcp
"$cfg" dynamicdhcp
1
425 leasetime
="${leasetime:-12h}"
426 start
="$(dhcp_calc "${start:-100}")"
427 limit
="${limit:-150}"
428 [ "$limit" -gt 0 ] && limit
=$
((limit-1
))
429 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
430 if [ "$dynamicdhcp" = "0" ]; then END
="static"; fi
431 xappend
"--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
433 dhcp_option_add
"$cfg" "$networkid"
441 [ "$force" = "0" ] && force
=
443 config_get dhcp_option
"$cfg" dhcp_option
444 for o
in $dhcp_option; do
445 xappend
"--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
452 local ip name names record
454 config_get names
"$cfg" name
"$2"
455 [ -n "$names" ] ||
return 0
457 config_get ip
"$cfg" ip
"$3"
458 [ -n "$ip" ] ||
return 0
460 for name
in $names; do
461 record
="${record:+$record }$name"
464 echo "$ip $record" >> $HOSTFILE
470 config_get srv
"$cfg" srv
471 [ -n "$srv" ] ||
return 0
473 config_get target
"$cfg" target
474 [ -n "$target" ] ||
return 0
476 config_get port
"$cfg" port
477 [ -n "$port" ] ||
return 0
479 config_get class
"$cfg" class
480 config_get weight
"$cfg" weight
482 local service
="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
484 xappend
"--srv-host=$service"
489 local domain relay pref
491 config_get domain
"$cfg" domain
492 [ -n "$domain" ] ||
return 0
494 config_get relay
"$cfg" relay
495 [ -n "$relay" ] ||
return 0
497 config_get pref
"$cfg" pref
0
499 local service
="$domain,$relay,$pref"
501 xappend
"--mx-host=$service"
508 config_get cname
"$cfg" cname
509 [ -n "$cname" ] ||
return 0
511 config_get target
"$cfg" target
512 [ -n "$target" ] ||
return 0
514 xappend
"--cname=${cname},${target}"
517 dhcp_hostrecord_add
() {
519 local names addresses record val
521 config_get names
"$cfg" name
"$2"
522 if [ -z "$names" ]; then
526 config_get addresses
"$cfg" ip
"$3"
527 if [ -z "$addresses" ]; then
531 for val
in $names $addresses; do
532 record
="${record:+$record,}$val"
535 xappend
"--host-record=$record"
540 procd_add_reload_trigger
"dhcp"
544 # Will be launched through hotplug
549 include
/lib
/functions
554 procd_set_param
command $PROG -C $CONFIGFILE -k -x /var
/run
/dnsmasq
/dnsmasq.pid
555 procd_set_param
file $CONFIGFILE
556 procd_set_param respawn
558 procd_add_jail dnsmasq ubus log
559 procd_add_jail_mount
$CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE /etc
/passwd
/dev
/urandom
/etc
/dnsmasq.conf
/tmp
/dnsmasq.d
/tmp
/resolv.conf.auto
/etc
/hosts
/etc
/ethers
560 procd_add_jail_mount_rw
/var
/run
/dnsmasq
/ /tmp
/dhcp.leases
$TIMESTAMPFILE
564 # before we can call xappend
565 mkdir
-p /var
/run
/dnsmasq
/
566 mkdir
-p $
(dirname $CONFIGFILE)
567 mkdir
-p /var
/lib
/misc
568 touch /tmp
/dhcp.leases
570 if [ ! -f "$TIMESTAMPFILE" ]; then
571 touch "$TIMESTAMPFILE"
572 chown nobody.nogroup
"$TIMESTAMPFILE"
575 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
576 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
578 # if we did this last, we could override auto-generated config
579 [ -f /etc
/dnsmasq.conf
] && {
580 xappend
"--conf-file=/etc/dnsmasq.conf"
584 config_foreach dnsmasq dnsmasq
585 config_foreach dhcp_host_add
host
587 config_foreach dhcp_boot_add boot
588 config_foreach dhcp_mac_add mac
589 config_foreach dhcp_tag_add tag
590 config_foreach dhcp_vendorclass_add vendorclass
591 config_foreach dhcp_userclass_add userclass
592 config_foreach dhcp_circuitid_add circuitid
593 config_foreach dhcp_remoteid_add remoteid
594 config_foreach dhcp_subscrid_add subscrid
595 config_foreach dhcp_domain_add domain
596 config_foreach dhcp_hostrecord_add hostrecord
600 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr
"lan" && {
601 local hostname
="$(uci_get system @system[0] hostname OpenWrt)"
602 dhcp_domain_add
"" "$hostname" "$lanaddr"
606 config_foreach dhcp_srv_add srvhost
607 config_foreach dhcp_mx_add mxhost
610 config_get odhcpd_is_active odhcpd maindhcp
611 if [ "$odhcpd_is_active" != "1" ]; then
612 config_foreach dhcp_add dhcp
616 config_foreach dhcp_cname_add cname
619 rm -f /tmp
/resolv.conf
620 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
621 echo "search $DOMAIN" >> /tmp
/resolv.conf
623 DNS_SERVERS
="$DNS_SERVERS 127.0.0.1"
624 for DNS_SERVER
in $DNS_SERVERS ; do
625 echo "nameserver $DNS_SERVER" >> /tmp
/resolv.conf
630 rc_procd start_service
"$@"
635 [ -f /tmp
/resolv.conf
] && {
636 rm -f /tmp
/resolv.conf
637 ln -s /tmp
/resolv.conf.auto
/tmp
/resolv.conf
639 rm -f /var
/run
/dnsmasq.
*.dhcp