1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2007-2012 OpenWrt.org
15 CONFIGFILE
="/var/etc/dnsmasq.conf"
16 HOSTFILE
="/tmp/hosts/dhcp"
21 echo "${value#--}" >> $CONFIGFILE
28 while [ -n "$ip" ]; do
31 res
="$(($res + $part))"
32 [ "${ip%.*}" != "$ip" ] && ip
="${ip#*.}" || ip
=
39 local stamp
="/var/run/dnsmasq.$ifname.dhcp"
42 [ -s "$stamp" ] && return $
(cat "$stamp")
44 udhcpc
-n -q -s /bin
/true
-t 1 -i "$ifname" >&- && rv
=1 || rv
=0
48 "found already running DHCP-server on interface '$ifname'" \
49 "refusing to start, use 'option force 1' to override"
56 pidof dnsmasq
>/dev
/null || \
57 logger
-t dnsmasq
"$@"
65 config_get_bool _loctmp
"$section" "$option" 0
66 [ $_loctmp -gt 0 ] && xappend
"$value"
74 config_get _loctmp
"$section" "$option"
75 [ -z "$_loctmp" ] && return 0
76 xappend
"$switch=$_loctmp"
84 xappend
"--address=$1"
88 local ifname
=$
(uci_get_state network
"$1" ifname
"$1")
89 xappend
"--interface=$ifname"
92 append_notinterface
() {
93 local ifname
=$
(uci_get_state network
"$1" ifname
"$1")
94 xappend
"--except-interface=$ifname"
98 xappend
"--addn-hosts=$1"
101 append_bogusnxdomain
() {
102 xappend
"--bogus-nxdomain=$1"
107 append_bool
"$cfg" authoritative
"--dhcp-authoritative"
108 append_bool
"$cfg" nodaemon
"--no-daemon"
109 append_bool
"$cfg" domainneeded
"--domain-needed"
110 append_bool
"$cfg" filterwin2k
"--filterwin2k"
111 append_bool
"$cfg" nohosts
"--no-hosts"
112 append_bool
"$cfg" nonegcache
"--no-negcache"
113 append_bool
"$cfg" strictorder
"--strict-order"
114 append_bool
"$cfg" logqueries
"--log-queries"
115 append_bool
"$cfg" noresolv
"--no-resolv"
116 append_bool
"$cfg" localise_queries
"--localise-queries"
117 append_bool
"$cfg" readethers
"--read-ethers"
118 append_bool
"$cfg" dbus
"--enable-dbus"
119 append_bool
"$cfg" boguspriv
"--bogus-priv"
120 append_bool
"$cfg" expandhosts
"--expand-hosts"
121 append_bool
"$cfg" enable_tftp
"--enable-tftp"
122 append_bool
"$cfg" nonwildcard
"--bind-interfaces"
123 append_bool
"$cfg" fqdn
"--dhcp-fqdn"
124 append_bool
"$cfg" proxydnssec
"--proxy-dnssec"
126 append_parm
"$cfg" dhcpscript
"--dhcp-script"
127 append_parm
"$cfg" cachesize
"--cache-size"
128 append_parm
"$cfg" dnsforwardmax
"--dns-forward-max"
129 append_parm
"$cfg" port
"--port"
130 append_parm
"$cfg" ednspacket_max
"--edns-packet-max"
131 append_parm
"$cfg" dhcpleasemax
"--dhcp-lease-max"
132 append_parm
"$cfg" "queryport" "--query-port"
133 append_parm
"$cfg" "domain" "--domain"
134 append_parm
"$cfg" "local" "--server"
135 config_list_foreach
"$cfg" "server" append_server
136 config_list_foreach
"$cfg" "address" append_address
137 config_list_foreach
"$cfg" "interface" append_interface
138 config_list_foreach
"$cfg" "notinterface" append_notinterface
139 config_list_foreach
"$cfg" "addnhosts" append_addnhosts
140 config_list_foreach
"$cfg" "bogusnxdomain" append_bogusnxdomain
141 append_parm
"$cfg" "leasefile" "--dhcp-leasefile"
142 append_parm
"$cfg" "resolvfile" "--resolv-file"
143 append_parm
"$cfg" "tftp_root" "--tftp-root"
144 append_parm
"$cfg" "dhcp_boot" "--dhcp-boot"
145 append_parm
"$cfg" "local_ttl" "--local-ttl"
147 config_get DOMAIN
"$cfg" domain
149 config_get_bool ADD_LOCAL_DOMAIN
"$cfg" add_local_domain
1
150 config_get_bool ADD_LOCAL_HOSTNAME
"$cfg" add_local_hostname
1
152 config_get_bool readethers
"$cfg" readethers
153 [ "$readethers" = "1" -a \
! -e "/etc/ethers" ] && touch /etc
/ethers
155 config_get leasefile
$cfg leasefile
156 [ -n "$leasefile" -a \
! -e "$leasefile" ] && touch "$leasefile"
157 config_get_bool cachelocal
"$cfg" cachelocal
1
159 config_get hostsfile
"$cfg" dhcphostsfile
160 [ -e "$hostsfile" ] && xappend
"--dhcp-hostsfile=$hostsfile"
162 mkdir
-p /tmp
/hosts
/tmp
/dnsmasq.d
163 xappend
"--addn-hosts=/tmp/hosts"
164 xappend
"--conf-dir=/tmp/dnsmasq.d"
167 config_get_bool rebind
"$cfg" rebind_protection
1
168 [ $rebind -gt 0 ] && {
170 "DNS rebinding protection is active," \
171 "will discard upstream RFC1918 responses!"
172 xappend
"--stop-dns-rebind"
174 local rebind_localhost
175 config_get_bool rebind_localhost
"$cfg" rebind_localhost
0
176 [ $rebind_localhost -gt 0 ] && {
177 log_once
"Allowing 127.0.0.0/8 responses"
178 xappend
"--rebind-localhost-ok"
181 append_rebind_domain
() {
182 log_once
"Allowing RFC1918 responses for domain $1"
183 xappend
"--rebind-domain-ok=$1"
186 config_list_foreach
"$cfg" rebind_domain append_rebind_domain
189 dhcp_option_add
"$cfg" "" 0
191 xappend
"--dhcp-broadcast=tag:needs-broadcast"
196 dhcp_subscrid_add
() {
199 config_get networkid
"$cfg" networkid
200 [ -n "$networkid" ] ||
return 0
202 config_get subscriberid
"$cfg" subscriberid
203 [ -n "$subscriberid" ] ||
return 0
205 xappend
"--dhcp-subscrid=$networkid,$subscriberid"
207 config_get_bool force
"$cfg" force
0
209 dhcp_option_add
"$cfg" "$networkid" "$force"
212 dhcp_remoteid_add
() {
215 config_get networkid
"$cfg" networkid
216 [ -n "$networkid" ] ||
return 0
218 config_get remoteid
"$cfg" remoteid
219 [ -n "$remoteid" ] ||
return 0
221 xappend
"--dhcp-remoteid=$networkid,$remoteid"
223 config_get_bool force
"$cfg" force
0
225 dhcp_option_add
"$cfg" "$networkid" "$force"
228 dhcp_circuitid_add
() {
231 config_get networkid
"$cfg" networkid
232 [ -n "$networkid" ] ||
return 0
234 config_get circuitid
"$cfg" circuitid
235 [ -n "$circuitid" ] ||
return 0
237 xappend
"--dhcp-circuitid=$networkid,$circuitid"
239 config_get_bool force
"$cfg" force
0
241 dhcp_option_add
"$cfg" "$networkid" "$force"
244 dhcp_userclass_add
() {
247 config_get networkid
"$cfg" networkid
248 [ -n "$networkid" ] ||
return 0
250 config_get userclass
"$cfg" userclass
251 [ -n "$userclass" ] ||
return 0
253 xappend
"--dhcp-userclass=$networkid,$userclass"
255 config_get_bool force
"$cfg" force
0
257 dhcp_option_add
"$cfg" "$networkid" "$force"
260 dhcp_vendorclass_add
() {
263 config_get networkid
"$cfg" networkid
264 [ -n "$networkid" ] ||
return 0
266 config_get vendorclass
"$cfg" vendorclass
267 [ -n "$vendorclass" ] ||
return 0
269 xappend
"--dhcp-vendorclass=$networkid,$vendorclass"
271 config_get_bool force
"$cfg" force
0
273 dhcp_option_add
"$cfg" "$networkid" "$force"
279 config_get_bool force
"$cfg" force
0
281 config_get networkid
"$cfg" networkid
282 [ -n "$networkid" ] && dhcp_option_add
"$cfg" "$networkid" "$force"
284 config_get name
"$cfg" name
285 config_get ip
"$cfg" ip
286 [ -n "$ip" -o -n "$name" ] ||
return 0
288 config_get mac
"$cfg" mac
290 [ -n "$name" ] ||
return 0
296 for m
in $mac; do append macs
"$m" ","; done
298 config_get tag
"$cfg" tag
300 config_get_bool broadcast
"$cfg" broadcast
0
301 [ "$broadcast" = "0" ] && broadcast
=
303 xappend
"--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
305 config_get_bool dns
"$cfg" dns
0
306 [ "$dns" = "1" ] && {
307 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
316 [ -n "$tag" ] ||
return 0
318 config_get_bool force
"$cfg" force
0
319 [ "$force" = "0" ] && force
=
321 config_get option
"$cfg" dhcp_option
323 xappend
"--dhcp-option${force:+-force}=tag:$tag,$o"
330 config_get networkid
"$cfg" networkid
331 [ -n "$networkid" ] ||
return 0
333 config_get mac
"$cfg" mac
334 [ -n "$mac" ] ||
return 0
336 xappend
"--dhcp-mac=$networkid,$mac"
338 dhcp_option_add
"$cfg" "$networkid"
344 config_get networkid
"$cfg" networkid
346 config_get filename
"$cfg" filename
347 [ -n "$filename" ] ||
return 0
349 config_get servername
"$cfg" servername
350 [ -n "$servername" ] ||
return 0
352 config_get serveraddress
"$cfg" serveraddress
353 [ -n "$serveraddress" ] ||
return 0
355 xappend
"--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress"
357 config_get_bool force
"$cfg" force
0
359 dhcp_option_add
"$cfg" "$networkid" "$force"
365 config_get net
"$cfg" interface
366 [ -n "$net" ] ||
return 0
368 config_get networkid
"$cfg" networkid
369 [ -n "$networkid" ] || networkid
="$net"
371 network_get_subnet subnet
"$net" ||
return 0
372 network_get_device ifname
"$net" ||
return 0
373 network_get_protocol proto
"$net" ||
return 0
375 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver
"$net" && {
376 DNS_SERVERS
="$DNS_SERVERS $dnsserver"
379 append_bool
"$cfg" ignore
"--no-dhcp-interface=$ifname" && return 0
381 # Do not support non-static interfaces for now
382 [ static
= "$proto" ] ||
return 0
384 # Override interface netmask with dhcp config if applicable
385 config_get netmask
"$cfg" netmask
"${subnet##*/}"
387 #check for an already active dhcp server on the interface, unless 'force' is set
388 config_get_bool force
"$cfg" force
0
389 [ $force -gt 0 ] || dhcp_check
"$ifname" ||
return 0
391 config_get start
"$cfg" start
392 config_get limit
"$cfg" limit
393 config_get leasetime
"$cfg" leasetime
394 config_get options
"$cfg" options
395 config_get_bool dynamicdhcp
"$cfg" dynamicdhcp
1
397 leasetime
="${leasetime:-12h}"
398 start
="$(dhcp_calc "${start:-100}")"
399 limit
="${limit:-150}"
400 [ "$limit" -gt 0 ] && limit
=$
((limit-1
))
401 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
402 if [ "$dynamicdhcp" = "0" ]; then END
="static"; fi
403 xappend
"--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
405 dhcp_option_add
"$cfg" "$networkid"
413 [ "$force" = "0" ] && force
=
415 config_get dhcp_option
"$cfg" dhcp_option
416 for o
in $dhcp_option; do
417 xappend
"--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
424 local ip name names record
426 config_get names
"$cfg" name
"$2"
427 [ -n "$names" ] ||
return 0
429 config_get ip
"$cfg" ip
"$3"
430 [ -n "$ip" ] ||
return 0
432 for name
in $names; do
433 [ "${name%.*}" == "$name" ] && \
434 name
="$name${DOMAIN:+.$DOMAIN}"
436 record
="${record:+$record/}$name"
439 xappend
"--address=/$record/$ip"
445 config_get srv
"$cfg" srv
446 [ -n "$srv" ] ||
return 0
448 config_get target
"$cfg" target
449 [ -n "$target" ] ||
return 0
451 config_get port
"$cfg" port
452 [ -n "$port" ] ||
return 0
454 config_get class
"$cfg" class
455 config_get weight
"$cfg" weight
457 local service
="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
459 xappend
"--srv-host=$service"
464 local domain relay pref
466 config_get domain
"$cfg" domain
467 [ -n "$domain" ] ||
return 0
469 config_get relay
"$cfg" relay
470 [ -n "$relay" ] ||
return 0
472 config_get pref
"$cfg" pref
0
474 local service
="$domain,$relay,$pref"
476 xappend
"--mx-host=$service"
483 config_get cname
"$cfg" cname
484 [ -n "$cname" ] ||
return 0
486 config_get target
"$cfg" target
487 [ -n "$target" ] ||
return 0
489 xappend
"--cname=${cname},${target}"
492 dhcp_hostrecord_add
() {
494 local names addresses record val
496 config_get names
"$cfg" name
"$2"
497 if [ -z "$names" ]; then
501 config_get addresses
"$cfg" ip
"$3"
502 if [ -z "$addresses" ]; then
506 for val
in $names $addresses; do
507 record
="${record:+$record,}$val"
510 xappend
"--host-record=$record"
515 procd_add_reload_trigger
"dhcp"
519 # Will be launched through hotplug
524 include
/lib
/functions
529 procd_set_param
command $PROG -C $CONFIGFILE -k
530 procd_set_param
file $CONFIGFILE
533 # before we can call xappend
534 mkdir
-p $
(dirname $CONFIGFILE)
536 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
537 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
539 # if we did this last, we could override auto-generated config
540 [ -f /etc
/dnsmasq.conf
] && {
541 xappend
"--conf-file=/etc/dnsmasq.conf"
545 config_foreach dnsmasq dnsmasq
546 config_foreach dhcp_host_add
host
548 config_foreach dhcp_boot_add boot
549 config_foreach dhcp_mac_add mac
550 config_foreach dhcp_tag_add tag
551 config_foreach dhcp_vendorclass_add vendorclass
552 config_foreach dhcp_userclass_add userclass
553 config_foreach dhcp_circuitid_add circuitid
554 config_foreach dhcp_remoteid_add remoteid
555 config_foreach dhcp_subscrid_add subscrid
556 config_foreach dhcp_domain_add domain
557 config_foreach dhcp_hostrecord_add hostrecord
561 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr
"lan" && {
562 local hostname
="$(uci_get system @system[0] hostname OpenWrt)"
563 dhcp_hostrecord_add
"" "${hostname%.$DOMAIN}${DOMAIN:+.$DOMAIN ${hostname%.$DOMAIN}}" "$lanaddr"
567 config_foreach dhcp_srv_add srvhost
568 config_foreach dhcp_mx_add mxhost
571 config_get odhcpd_is_active odhcpd maindhcp
572 if [ "$odhcpd_is_active" != "1" ]; then
573 config_foreach dhcp_add dhcp
577 config_foreach dhcp_cname_add cname
580 rm -f /tmp
/resolv.conf
581 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
582 echo "search $DOMAIN" >> /tmp
/resolv.conf
584 DNS_SERVERS
="$DNS_SERVERS 127.0.0.1"
585 for DNS_SERVER
in $DNS_SERVERS ; do
586 echo "nameserver $DNS_SERVER" >> /tmp
/resolv.conf
591 rc_procd start_service
"$@"
596 [ -f /tmp
/resolv.conf
] && {
597 rm -f /tmp
/resolv.conf
598 ln -s /tmp
/resolv.conf.auto
/tmp
/resolv.conf
600 rm -f /var
/run
/dnsmasq.
*.dhcp