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=$1"
89 local ifname
=$
(uci_get_state network
"$1" ifname
"$1")
90 xappend
"--interface=$ifname"
93 append_notinterface
() {
94 local ifname
=$
(uci_get_state network
"$1" ifname
"$1")
95 xappend
"--except-interface=$ifname"
99 xappend
"--addn-hosts=$1"
102 append_bogusnxdomain
() {
103 xappend
"--bogus-nxdomain=$1"
108 append_bool
"$cfg" authoritative
"--dhcp-authoritative"
109 append_bool
"$cfg" nodaemon
"--no-daemon"
110 append_bool
"$cfg" domainneeded
"--domain-needed"
111 append_bool
"$cfg" filterwin2k
"--filterwin2k"
112 append_bool
"$cfg" nohosts
"--no-hosts"
113 append_bool
"$cfg" nonegcache
"--no-negcache"
114 append_bool
"$cfg" strictorder
"--strict-order"
115 append_bool
"$cfg" logqueries
"--log-queries"
116 append_bool
"$cfg" noresolv
"--no-resolv"
117 append_bool
"$cfg" localise_queries
"--localise-queries"
118 append_bool
"$cfg" readethers
"--read-ethers"
119 append_bool
"$cfg" dbus
"--enable-dbus"
120 append_bool
"$cfg" boguspriv
"--bogus-priv"
121 append_bool
"$cfg" expandhosts
"--expand-hosts"
122 append_bool
"$cfg" enable_tftp
"--enable-tftp"
123 append_bool
"$cfg" nonwildcard
"--bind-interfaces"
124 append_bool
"$cfg" fqdn
"--dhcp-fqdn"
125 append_bool
"$cfg" proxydnssec
"--proxy-dnssec"
127 append_parm
"$cfg" dhcpscript
"--dhcp-script"
128 append_parm
"$cfg" cachesize
"--cache-size"
129 append_parm
"$cfg" dnsforwardmax
"--dns-forward-max"
130 append_parm
"$cfg" port
"--port"
131 append_parm
"$cfg" ednspacket_max
"--edns-packet-max"
132 append_parm
"$cfg" dhcpleasemax
"--dhcp-lease-max"
133 append_parm
"$cfg" "queryport" "--query-port"
134 append_parm
"$cfg" "domain" "--domain"
135 append_parm
"$cfg" "local" "--server"
136 config_list_foreach
"$cfg" "server" append_server
137 config_list_foreach
"$cfg" "address" append_address
138 config_list_foreach
"$cfg" "interface" append_interface
139 config_list_foreach
"$cfg" "notinterface" append_notinterface
140 config_list_foreach
"$cfg" "addnhosts" append_addnhosts
141 config_list_foreach
"$cfg" "bogusnxdomain" append_bogusnxdomain
142 append_parm
"$cfg" "leasefile" "--dhcp-leasefile"
143 append_parm
"$cfg" "resolvfile" "--resolv-file"
144 append_parm
"$cfg" "tftp_root" "--tftp-root"
145 append_parm
"$cfg" "dhcp_boot" "--dhcp-boot"
146 append_parm
"$cfg" "local_ttl" "--local-ttl"
148 config_get DOMAIN
"$cfg" domain
150 config_get_bool ADD_LOCAL_DOMAIN
"$cfg" add_local_domain
1
151 config_get_bool ADD_LOCAL_HOSTNAME
"$cfg" add_local_hostname
1
153 config_get_bool readethers
"$cfg" readethers
154 [ "$readethers" = "1" -a \
! -e "/etc/ethers" ] && touch /etc
/ethers
156 config_get leasefile
$cfg leasefile
157 [ -n "$leasefile" -a \
! -e "$leasefile" ] && touch "$leasefile"
158 config_get_bool cachelocal
"$cfg" cachelocal
1
160 config_get hostsfile
"$cfg" dhcphostsfile
161 [ -e "$hostsfile" ] && xappend
"--dhcp-hostsfile=$hostsfile"
163 mkdir
-p /tmp
/hosts
/tmp
/dnsmasq.d
164 xappend
"--addn-hosts=/tmp/hosts"
165 xappend
"--conf-dir=/tmp/dnsmasq.d"
168 config_get_bool rebind
"$cfg" rebind_protection
1
169 [ $rebind -gt 0 ] && {
171 "DNS rebinding protection is active," \
172 "will discard upstream RFC1918 responses!"
173 xappend
"--stop-dns-rebind"
175 local rebind_localhost
176 config_get_bool rebind_localhost
"$cfg" rebind_localhost
0
177 [ $rebind_localhost -gt 0 ] && {
178 log_once
"Allowing 127.0.0.0/8 responses"
179 xappend
"--rebind-localhost-ok"
182 append_rebind_domain
() {
183 log_once
"Allowing RFC1918 responses for domain $1"
184 xappend
"--rebind-domain-ok=$1"
187 config_list_foreach
"$cfg" rebind_domain append_rebind_domain
190 config_get_bool dnssec
"$cfg" dnssec
0
191 [ "$dnssec" -gt 0 ] && {
192 xappend
"--conf-file=$TRUSTANCHORSFILE"
194 append_bool
"$cfg" dnsseccheckunsigned
"--dnssec-check-unsigned"
197 dhcp_option_add
"$cfg" "" 0
199 xappend
"--dhcp-broadcast=tag:needs-broadcast"
204 dhcp_subscrid_add
() {
207 config_get networkid
"$cfg" networkid
208 [ -n "$networkid" ] ||
return 0
210 config_get subscriberid
"$cfg" subscriberid
211 [ -n "$subscriberid" ] ||
return 0
213 xappend
"--dhcp-subscrid=$networkid,$subscriberid"
215 config_get_bool force
"$cfg" force
0
217 dhcp_option_add
"$cfg" "$networkid" "$force"
220 dhcp_remoteid_add
() {
223 config_get networkid
"$cfg" networkid
224 [ -n "$networkid" ] ||
return 0
226 config_get remoteid
"$cfg" remoteid
227 [ -n "$remoteid" ] ||
return 0
229 xappend
"--dhcp-remoteid=$networkid,$remoteid"
231 config_get_bool force
"$cfg" force
0
233 dhcp_option_add
"$cfg" "$networkid" "$force"
236 dhcp_circuitid_add
() {
239 config_get networkid
"$cfg" networkid
240 [ -n "$networkid" ] ||
return 0
242 config_get circuitid
"$cfg" circuitid
243 [ -n "$circuitid" ] ||
return 0
245 xappend
"--dhcp-circuitid=$networkid,$circuitid"
247 config_get_bool force
"$cfg" force
0
249 dhcp_option_add
"$cfg" "$networkid" "$force"
252 dhcp_userclass_add
() {
255 config_get networkid
"$cfg" networkid
256 [ -n "$networkid" ] ||
return 0
258 config_get userclass
"$cfg" userclass
259 [ -n "$userclass" ] ||
return 0
261 xappend
"--dhcp-userclass=$networkid,$userclass"
263 config_get_bool force
"$cfg" force
0
265 dhcp_option_add
"$cfg" "$networkid" "$force"
268 dhcp_vendorclass_add
() {
271 config_get networkid
"$cfg" networkid
272 [ -n "$networkid" ] ||
return 0
274 config_get vendorclass
"$cfg" vendorclass
275 [ -n "$vendorclass" ] ||
return 0
277 xappend
"--dhcp-vendorclass=$networkid,$vendorclass"
279 config_get_bool force
"$cfg" force
0
281 dhcp_option_add
"$cfg" "$networkid" "$force"
287 config_get_bool force
"$cfg" force
0
289 config_get networkid
"$cfg" networkid
290 [ -n "$networkid" ] && dhcp_option_add
"$cfg" "$networkid" "$force"
292 config_get name
"$cfg" name
293 config_get ip
"$cfg" ip
294 [ -n "$ip" -o -n "$name" ] ||
return 0
296 config_get mac
"$cfg" mac
298 [ -n "$name" ] ||
return 0
304 for m
in $mac; do append macs
"$m" ","; done
306 config_get tag
"$cfg" tag
308 config_get_bool broadcast
"$cfg" broadcast
0
309 [ "$broadcast" = "0" ] && broadcast
=
311 xappend
"--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
313 config_get_bool dns
"$cfg" dns
0
314 [ "$dns" = "1" ] && {
315 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
324 [ -n "$tag" ] ||
return 0
326 config_get_bool force
"$cfg" force
0
327 [ "$force" = "0" ] && force
=
329 config_get option
"$cfg" dhcp_option
331 xappend
"--dhcp-option${force:+-force}=tag:$tag,$o"
338 config_get networkid
"$cfg" networkid
339 [ -n "$networkid" ] ||
return 0
341 config_get mac
"$cfg" mac
342 [ -n "$mac" ] ||
return 0
344 xappend
"--dhcp-mac=$networkid,$mac"
346 dhcp_option_add
"$cfg" "$networkid"
352 config_get networkid
"$cfg" networkid
354 config_get filename
"$cfg" filename
355 [ -n "$filename" ] ||
return 0
357 config_get servername
"$cfg" servername
358 [ -n "$servername" ] ||
return 0
360 config_get serveraddress
"$cfg" serveraddress
361 [ -n "$serveraddress" ] ||
return 0
363 xappend
"--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress"
365 config_get_bool force
"$cfg" force
0
367 dhcp_option_add
"$cfg" "$networkid" "$force"
373 config_get net
"$cfg" interface
374 [ -n "$net" ] ||
return 0
376 config_get dhcpv4
"$cfg" dhcpv4
377 [ "$dhcpv4" != "disabled" ] ||
return 0
379 config_get networkid
"$cfg" networkid
380 [ -n "$networkid" ] || networkid
="$net"
382 network_get_subnet subnet
"$net" ||
return 0
383 network_get_device ifname
"$net" ||
return 0
384 network_get_protocol proto
"$net" ||
return 0
386 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver
"$net" && {
387 DNS_SERVERS
="$DNS_SERVERS $dnsserver"
390 append_bool
"$cfg" ignore
"--no-dhcp-interface=$ifname" && return 0
392 # Do not support non-static interfaces for now
393 [ static
= "$proto" ] ||
return 0
395 # Override interface netmask with dhcp config if applicable
396 config_get netmask
"$cfg" netmask
"${subnet##*/}"
398 #check for an already active dhcp server on the interface, unless 'force' is set
399 config_get_bool force
"$cfg" force
0
400 [ $force -gt 0 ] || dhcp_check
"$ifname" ||
return 0
402 config_get start
"$cfg" start
403 config_get limit
"$cfg" limit
404 config_get leasetime
"$cfg" leasetime
405 config_get options
"$cfg" options
406 config_get_bool dynamicdhcp
"$cfg" dynamicdhcp
1
408 leasetime
="${leasetime:-12h}"
409 start
="$(dhcp_calc "${start:-100}")"
410 limit
="${limit:-150}"
411 [ "$limit" -gt 0 ] && limit
=$
((limit-1
))
412 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
413 if [ "$dynamicdhcp" = "0" ]; then END
="static"; fi
414 xappend
"--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
416 dhcp_option_add
"$cfg" "$networkid"
424 [ "$force" = "0" ] && force
=
426 config_get dhcp_option
"$cfg" dhcp_option
427 for o
in $dhcp_option; do
428 xappend
"--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
435 local ip name names record
437 config_get names
"$cfg" name
"$2"
438 [ -n "$names" ] ||
return 0
440 config_get ip
"$cfg" ip
"$3"
441 [ -n "$ip" ] ||
return 0
443 for name
in $names; do
444 [ "${name%.*}" == "$name" ] && \
445 name
="$name${DOMAIN:+.$DOMAIN}"
447 record
="${record:+$record/}$name"
450 xappend
"--address=/$record/$ip"
456 config_get srv
"$cfg" srv
457 [ -n "$srv" ] ||
return 0
459 config_get target
"$cfg" target
460 [ -n "$target" ] ||
return 0
462 config_get port
"$cfg" port
463 [ -n "$port" ] ||
return 0
465 config_get class
"$cfg" class
466 config_get weight
"$cfg" weight
468 local service
="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
470 xappend
"--srv-host=$service"
475 local domain relay pref
477 config_get domain
"$cfg" domain
478 [ -n "$domain" ] ||
return 0
480 config_get relay
"$cfg" relay
481 [ -n "$relay" ] ||
return 0
483 config_get pref
"$cfg" pref
0
485 local service
="$domain,$relay,$pref"
487 xappend
"--mx-host=$service"
494 config_get cname
"$cfg" cname
495 [ -n "$cname" ] ||
return 0
497 config_get target
"$cfg" target
498 [ -n "$target" ] ||
return 0
500 xappend
"--cname=${cname},${target}"
503 dhcp_hostrecord_add
() {
505 local names addresses record val
507 config_get names
"$cfg" name
"$2"
508 if [ -z "$names" ]; then
512 config_get addresses
"$cfg" ip
"$3"
513 if [ -z "$addresses" ]; then
517 for val
in $names $addresses; do
518 record
="${record:+$record,}$val"
521 xappend
"--host-record=$record"
526 procd_add_reload_trigger
"dhcp"
530 # Will be launched through hotplug
535 include
/lib
/functions
540 procd_set_param
command $PROG -C $CONFIGFILE -k
541 procd_set_param
file $CONFIGFILE
542 procd_set_param respawn
545 # before we can call xappend
546 mkdir
-p $
(dirname $CONFIGFILE)
548 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
549 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
551 # if we did this last, we could override auto-generated config
552 [ -f /etc
/dnsmasq.conf
] && {
553 xappend
"--conf-file=/etc/dnsmasq.conf"
557 config_foreach dnsmasq dnsmasq
558 config_foreach dhcp_host_add
host
560 config_foreach dhcp_boot_add boot
561 config_foreach dhcp_mac_add mac
562 config_foreach dhcp_tag_add tag
563 config_foreach dhcp_vendorclass_add vendorclass
564 config_foreach dhcp_userclass_add userclass
565 config_foreach dhcp_circuitid_add circuitid
566 config_foreach dhcp_remoteid_add remoteid
567 config_foreach dhcp_subscrid_add subscrid
568 config_foreach dhcp_domain_add domain
569 config_foreach dhcp_hostrecord_add hostrecord
573 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr
"lan" && {
574 local hostname
="$(uci_get system @system[0] hostname OpenWrt)"
575 dhcp_hostrecord_add
"" "${hostname%.$DOMAIN}${DOMAIN:+.$DOMAIN ${hostname%.$DOMAIN}}" "$lanaddr"
579 config_foreach dhcp_srv_add srvhost
580 config_foreach dhcp_mx_add mxhost
583 config_get odhcpd_is_active odhcpd maindhcp
584 if [ "$odhcpd_is_active" != "1" ]; then
585 config_foreach dhcp_add dhcp
589 config_foreach dhcp_cname_add cname
592 rm -f /tmp
/resolv.conf
593 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
594 echo "search $DOMAIN" >> /tmp
/resolv.conf
596 DNS_SERVERS
="$DNS_SERVERS 127.0.0.1"
597 for DNS_SERVER
in $DNS_SERVERS ; do
598 echo "nameserver $DNS_SERVER" >> /tmp
/resolv.conf
603 rc_procd start_service
"$@"
608 [ -f /tmp
/resolv.conf
] && {
609 rm -f /tmp
/resolv.conf
610 ln -s /tmp
/resolv.conf.auto
/tmp
/resolv.conf
612 rm -f /var
/run
/dnsmasq.
*.dhcp