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"
22 echo "${value#--}" >> $CONFIGFILE
29 while [ -n "$ip" ]; do
32 res
="$(($res + $part))"
33 [ "${ip%.*}" != "$ip" ] && ip
="${ip#*.}" || ip
=
40 local stamp
="/var/run/dnsmasq.$ifname.dhcp"
43 [ -s "$stamp" ] && return $
(cat "$stamp")
45 udhcpc
-n -q -s /bin
/true
-t 1 -i "$ifname" >&- && rv
=1 || rv
=0
49 "found already running DHCP-server on interface '$ifname'" \
50 "refusing to start, use 'option force 1' to override"
57 pidof dnsmasq
>/dev
/null || \
58 logger
-t dnsmasq
"$@"
66 config_get_bool _loctmp
"$section" "$option" 0
67 [ $_loctmp -gt 0 ] && xappend
"$value"
75 config_get _loctmp
"$section" "$option"
76 [ -z "$_loctmp" ] && return 0
77 xappend
"$switch=$_loctmp"
85 xappend
"--address=$1"
93 local ifname
=$
(uci_get_state network
"$1" ifname
"$1")
94 xappend
"--interface=$ifname"
97 append_notinterface
() {
98 local ifname
=$
(uci_get_state network
"$1" ifname
"$1")
99 xappend
"--except-interface=$ifname"
103 xappend
"--addn-hosts=$1"
106 append_bogusnxdomain
() {
107 xappend
"--bogus-nxdomain=$1"
110 append_pxe_service
() {
111 xappend
"--pxe-service=$1"
116 append_bool
"$cfg" authoritative
"--dhcp-authoritative"
117 append_bool
"$cfg" nodaemon
"--no-daemon"
118 append_bool
"$cfg" domainneeded
"--domain-needed"
119 append_bool
"$cfg" filterwin2k
"--filterwin2k"
120 append_bool
"$cfg" nohosts
"--no-hosts"
121 append_bool
"$cfg" nonegcache
"--no-negcache"
122 append_bool
"$cfg" strictorder
"--strict-order"
123 append_bool
"$cfg" logqueries
"--log-queries"
124 append_bool
"$cfg" noresolv
"--no-resolv"
125 append_bool
"$cfg" localise_queries
"--localise-queries"
126 append_bool
"$cfg" readethers
"--read-ethers"
127 append_bool
"$cfg" dbus
"--enable-dbus"
128 append_bool
"$cfg" boguspriv
"--bogus-priv"
129 append_bool
"$cfg" expandhosts
"--expand-hosts"
130 append_bool
"$cfg" enable_tftp
"--enable-tftp"
131 append_bool
"$cfg" tftp_no_fail
"--tftp-no-fail"
132 append_bool
"$cfg" nonwildcard
"--bind-interfaces"
133 append_bool
"$cfg" fqdn
"--dhcp-fqdn"
134 append_bool
"$cfg" proxydnssec
"--proxy-dnssec"
135 append_bool
"$cfg" localservice
"--local-service"
136 append_bool
"$cfg" quietdhcp
"--quiet-dhcp"
138 append_parm
"$cfg" dhcpscript
"--dhcp-script"
139 append_parm
"$cfg" cachesize
"--cache-size"
140 append_parm
"$cfg" dnsforwardmax
"--dns-forward-max"
141 append_parm
"$cfg" port
"--port"
142 append_parm
"$cfg" ednspacket_max
"--edns-packet-max"
143 append_parm
"$cfg" dhcpleasemax
"--dhcp-lease-max"
144 append_parm
"$cfg" "queryport" "--query-port"
145 append_parm
"$cfg" "domain" "--domain"
146 append_parm
"$cfg" "local" "--server"
147 config_list_foreach
"$cfg" "server" append_server
148 config_list_foreach
"$cfg" "address" append_address
149 config_list_foreach
"$cfg" "ipset" append_ipset
150 config_list_foreach
"$cfg" "interface" append_interface
151 config_list_foreach
"$cfg" "notinterface" append_notinterface
152 config_list_foreach
"$cfg" "addnhosts" append_addnhosts
153 config_list_foreach
"$cfg" "bogusnxdomain" append_bogusnxdomain
154 append_parm
"$cfg" "leasefile" "--dhcp-leasefile"
155 append_parm
"$cfg" "resolvfile" "--resolv-file"
156 append_parm
"$cfg" "tftp_root" "--tftp-root"
157 append_parm
"$cfg" "dhcp_boot" "--dhcp-boot"
158 append_parm
"$cfg" "local_ttl" "--local-ttl"
159 append_parm
"$cfg" "pxe_prompt" "--pxe-prompt"
160 config_list_foreach
"$cfg" "pxe_service" append_pxe_service
161 config_get DOMAIN
"$cfg" domain
163 config_get_bool ADD_LOCAL_DOMAIN
"$cfg" add_local_domain
1
164 config_get_bool ADD_LOCAL_HOSTNAME
"$cfg" add_local_hostname
1
166 config_get_bool readethers
"$cfg" readethers
167 [ "$readethers" = "1" -a \
! -e "/etc/ethers" ] && touch /etc
/ethers
169 config_get leasefile
$cfg leasefile
170 [ -n "$leasefile" -a \
! -e "$leasefile" ] && touch "$leasefile"
171 config_get_bool cachelocal
"$cfg" cachelocal
1
173 config_get hostsfile
"$cfg" dhcphostsfile
174 [ -e "$hostsfile" ] && xappend
"--dhcp-hostsfile=$hostsfile"
176 mkdir
-p /tmp
/hosts
/tmp
/dnsmasq.d
177 xappend
"--addn-hosts=/tmp/hosts"
178 xappend
"--conf-dir=/tmp/dnsmasq.d"
181 config_get_bool rebind
"$cfg" rebind_protection
1
182 [ $rebind -gt 0 ] && {
184 "DNS rebinding protection is active," \
185 "will discard upstream RFC1918 responses!"
186 xappend
"--stop-dns-rebind"
188 local rebind_localhost
189 config_get_bool rebind_localhost
"$cfg" rebind_localhost
0
190 [ $rebind_localhost -gt 0 ] && {
191 log_once
"Allowing 127.0.0.0/8 responses"
192 xappend
"--rebind-localhost-ok"
195 append_rebind_domain
() {
196 log_once
"Allowing RFC1918 responses for domain $1"
197 xappend
"--rebind-domain-ok=$1"
200 config_list_foreach
"$cfg" rebind_domain append_rebind_domain
203 config_get_bool dnssec
"$cfg" dnssec
0
204 [ "$dnssec" -gt 0 ] && {
205 xappend
"--conf-file=$TRUSTANCHORSFILE"
207 append_bool
"$cfg" dnsseccheckunsigned
"--dnssec-check-unsigned"
210 dhcp_option_add
"$cfg" "" 0
212 xappend
"--dhcp-broadcast=tag:needs-broadcast"
217 dhcp_subscrid_add
() {
220 config_get networkid
"$cfg" networkid
221 [ -n "$networkid" ] ||
return 0
223 config_get subscriberid
"$cfg" subscriberid
224 [ -n "$subscriberid" ] ||
return 0
226 xappend
"--dhcp-subscrid=$networkid,$subscriberid"
228 config_get_bool force
"$cfg" force
0
230 dhcp_option_add
"$cfg" "$networkid" "$force"
233 dhcp_remoteid_add
() {
236 config_get networkid
"$cfg" networkid
237 [ -n "$networkid" ] ||
return 0
239 config_get remoteid
"$cfg" remoteid
240 [ -n "$remoteid" ] ||
return 0
242 xappend
"--dhcp-remoteid=$networkid,$remoteid"
244 config_get_bool force
"$cfg" force
0
246 dhcp_option_add
"$cfg" "$networkid" "$force"
249 dhcp_circuitid_add
() {
252 config_get networkid
"$cfg" networkid
253 [ -n "$networkid" ] ||
return 0
255 config_get circuitid
"$cfg" circuitid
256 [ -n "$circuitid" ] ||
return 0
258 xappend
"--dhcp-circuitid=$networkid,$circuitid"
260 config_get_bool force
"$cfg" force
0
262 dhcp_option_add
"$cfg" "$networkid" "$force"
265 dhcp_userclass_add
() {
268 config_get networkid
"$cfg" networkid
269 [ -n "$networkid" ] ||
return 0
271 config_get userclass
"$cfg" userclass
272 [ -n "$userclass" ] ||
return 0
274 xappend
"--dhcp-userclass=$networkid,$userclass"
276 config_get_bool force
"$cfg" force
0
278 dhcp_option_add
"$cfg" "$networkid" "$force"
281 dhcp_vendorclass_add
() {
284 config_get networkid
"$cfg" networkid
285 [ -n "$networkid" ] ||
return 0
287 config_get vendorclass
"$cfg" vendorclass
288 [ -n "$vendorclass" ] ||
return 0
290 xappend
"--dhcp-vendorclass=$networkid,$vendorclass"
292 config_get_bool force
"$cfg" force
0
294 dhcp_option_add
"$cfg" "$networkid" "$force"
300 config_get_bool force
"$cfg" force
0
302 config_get networkid
"$cfg" networkid
303 [ -n "$networkid" ] && dhcp_option_add
"$cfg" "$networkid" "$force"
305 config_get name
"$cfg" name
306 config_get ip
"$cfg" ip
307 [ -n "$ip" -o -n "$name" ] ||
return 0
309 config_get_bool dns
"$cfg" dns
0
310 [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
311 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
314 config_get mac
"$cfg" mac
315 if [ -n "$mac" ]; then
316 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
318 for m
in $mac; do append macs
"$m" ","; done
320 # --dhcp-host=lap,192.168.0.199
321 [ -n "$name" ] ||
return 0
326 config_get tag
"$cfg" tag
328 config_get_bool broadcast
"$cfg" broadcast
0
329 [ "$broadcast" = "0" ] && broadcast
=
331 xappend
"--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
339 [ -n "$tag" ] ||
return 0
341 config_get_bool force
"$cfg" force
0
342 [ "$force" = "0" ] && force
=
344 config_get option
"$cfg" dhcp_option
346 xappend
"--dhcp-option${force:+-force}=tag:$tag,$o"
353 config_get networkid
"$cfg" networkid
354 [ -n "$networkid" ] ||
return 0
356 config_get mac
"$cfg" mac
357 [ -n "$mac" ] ||
return 0
359 xappend
"--dhcp-mac=$networkid,$mac"
361 dhcp_option_add
"$cfg" "$networkid"
367 config_get networkid
"$cfg" networkid
369 config_get filename
"$cfg" filename
370 [ -n "$filename" ] ||
return 0
372 config_get servername
"$cfg" servername
373 config_get serveraddress
"$cfg" serveraddress
375 [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
377 xappend
"--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
379 config_get_bool force
"$cfg" force
0
381 dhcp_option_add
"$cfg" "$networkid" "$force"
387 config_get net
"$cfg" interface
388 [ -n "$net" ] ||
return 0
390 config_get dhcpv4
"$cfg" dhcpv4
391 [ "$dhcpv4" != "disabled" ] ||
return 0
393 config_get networkid
"$cfg" networkid
394 [ -n "$networkid" ] || networkid
="$net"
396 network_get_subnet subnet
"$net" ||
return 0
397 network_get_device ifname
"$net" ||
return 0
398 network_get_protocol proto
"$net" ||
return 0
400 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver
"$net" && {
401 DNS_SERVERS
="$DNS_SERVERS $dnsserver"
404 append_bool
"$cfg" ignore
"--no-dhcp-interface=$ifname" && return 0
406 # Do not support non-static interfaces for now
407 [ static
= "$proto" ] ||
return 0
409 # Override interface netmask with dhcp config if applicable
410 config_get netmask
"$cfg" netmask
"${subnet##*/}"
412 #check for an already active dhcp server on the interface, unless 'force' is set
413 config_get_bool force
"$cfg" force
0
414 [ $force -gt 0 ] || dhcp_check
"$ifname" ||
return 0
416 config_get start
"$cfg" start
417 config_get limit
"$cfg" limit
418 config_get leasetime
"$cfg" leasetime
419 config_get options
"$cfg" options
420 config_get_bool dynamicdhcp
"$cfg" dynamicdhcp
1
422 leasetime
="${leasetime:-12h}"
423 start
="$(dhcp_calc "${start:-100}")"
424 limit
="${limit:-150}"
425 [ "$limit" -gt 0 ] && limit
=$
((limit-1
))
426 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
427 if [ "$dynamicdhcp" = "0" ]; then END
="static"; fi
428 xappend
"--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
430 dhcp_option_add
"$cfg" "$networkid"
438 [ "$force" = "0" ] && force
=
440 config_get dhcp_option
"$cfg" dhcp_option
441 for o
in $dhcp_option; do
442 xappend
"--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
449 local ip name names record
451 config_get names
"$cfg" name
"$2"
452 [ -n "$names" ] ||
return 0
454 config_get ip
"$cfg" ip
"$3"
455 [ -n "$ip" ] ||
return 0
457 for name
in $names; do
458 record
="${record:+$record }$name"
461 echo "$ip $record" >> $HOSTFILE
467 config_get srv
"$cfg" srv
468 [ -n "$srv" ] ||
return 0
470 config_get target
"$cfg" target
471 [ -n "$target" ] ||
return 0
473 config_get port
"$cfg" port
474 [ -n "$port" ] ||
return 0
476 config_get class
"$cfg" class
477 config_get weight
"$cfg" weight
479 local service
="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
481 xappend
"--srv-host=$service"
486 local domain relay pref
488 config_get domain
"$cfg" domain
489 [ -n "$domain" ] ||
return 0
491 config_get relay
"$cfg" relay
492 [ -n "$relay" ] ||
return 0
494 config_get pref
"$cfg" pref
0
496 local service
="$domain,$relay,$pref"
498 xappend
"--mx-host=$service"
505 config_get cname
"$cfg" cname
506 [ -n "$cname" ] ||
return 0
508 config_get target
"$cfg" target
509 [ -n "$target" ] ||
return 0
511 xappend
"--cname=${cname},${target}"
514 dhcp_hostrecord_add
() {
516 local names addresses record val
518 config_get names
"$cfg" name
"$2"
519 if [ -z "$names" ]; then
523 config_get addresses
"$cfg" ip
"$3"
524 if [ -z "$addresses" ]; then
528 for val
in $names $addresses; do
529 record
="${record:+$record,}$val"
532 xappend
"--host-record=$record"
537 procd_add_reload_trigger
"dhcp"
541 # Will be launched through hotplug
546 include
/lib
/functions
551 procd_set_param
command $PROG -C $CONFIGFILE -k -x /var
/run
/dnsmasq
/dnsmasq.pid
552 procd_set_param
file $CONFIGFILE
553 procd_set_param respawn
555 procd_add_jail dnsmasq ubus log
556 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
557 procd_add_jail_mount_rw
/var
/run
/dnsmasq
/ /tmp
/dhcp.leases
561 # before we can call xappend
562 mkdir
-p /var
/run
/dnsmasq
/
563 mkdir
-p $
(dirname $CONFIGFILE)
564 mkdir
-p /var
/lib
/misc
565 touch /tmp
/dhcp.leases
568 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
569 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
571 # if we did this last, we could override auto-generated config
572 [ -f /etc
/dnsmasq.conf
] && {
573 xappend
"--conf-file=/etc/dnsmasq.conf"
577 config_foreach dnsmasq dnsmasq
578 config_foreach dhcp_host_add
host
580 config_foreach dhcp_boot_add boot
581 config_foreach dhcp_mac_add mac
582 config_foreach dhcp_tag_add tag
583 config_foreach dhcp_vendorclass_add vendorclass
584 config_foreach dhcp_userclass_add userclass
585 config_foreach dhcp_circuitid_add circuitid
586 config_foreach dhcp_remoteid_add remoteid
587 config_foreach dhcp_subscrid_add subscrid
588 config_foreach dhcp_domain_add domain
589 config_foreach dhcp_hostrecord_add hostrecord
593 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr
"lan" && {
594 local hostname
="$(uci_get system @system[0] hostname OpenWrt)"
595 dhcp_domain_add
"" "$hostname" "$lanaddr"
599 config_foreach dhcp_srv_add srvhost
600 config_foreach dhcp_mx_add mxhost
603 config_get odhcpd_is_active odhcpd maindhcp
604 if [ "$odhcpd_is_active" != "1" ]; then
605 config_foreach dhcp_add dhcp
609 config_foreach dhcp_cname_add cname
612 rm -f /tmp
/resolv.conf
613 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
614 echo "search $DOMAIN" >> /tmp
/resolv.conf
616 DNS_SERVERS
="$DNS_SERVERS 127.0.0.1"
617 for DNS_SERVER
in $DNS_SERVERS ; do
618 echo "nameserver $DNS_SERVER" >> /tmp
/resolv.conf
623 rc_procd start_service
"$@"
628 [ -f /tmp
/resolv.conf
] && {
629 rm -f /tmp
/resolv.conf
630 ln -s /tmp
/resolv.conf.auto
/tmp
/resolv.conf
632 rm -f /var
/run
/dnsmasq.
*.dhcp