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 "$cfg" nonwildcard "--bind-interfaces"
132 append_bool "$cfg" fqdn "--dhcp-fqdn"
133 append_bool "$cfg" proxydnssec "--proxy-dnssec"
134 append_bool "$cfg" localservice "--local-service"
135 append_bool "$cfg" quietdhcp "--quiet-dhcp"
137 append_parm "$cfg" dhcpscript "--dhcp-script"
138 append_parm "$cfg" cachesize "--cache-size"
139 append_parm "$cfg" dnsforwardmax "--dns-forward-max"
140 append_parm "$cfg" port "--port"
141 append_parm "$cfg" ednspacket_max "--edns-packet-max"
142 append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
143 append_parm "$cfg" "queryport" "--query-port"
144 append_parm "$cfg" "domain" "--domain"
145 append_parm "$cfg" "local" "--server"
146 config_list_foreach "$cfg" "server" append_server
147 config_list_foreach "$cfg" "address" append_address
148 config_list_foreach "$cfg" "ipset" append_ipset
149 config_list_foreach "$cfg" "interface" append_interface
150 config_list_foreach "$cfg" "notinterface" append_notinterface
151 config_list_foreach "$cfg" "addnhosts" append_addnhosts
152 config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
153 append_parm "$cfg" "leasefile" "--dhcp-leasefile"
154 append_parm "$cfg" "resolvfile" "--resolv-file"
155 append_parm "$cfg" "tftp_root" "--tftp-root"
156 append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
157 append_parm "$cfg" "local_ttl" "--local-ttl"
158 append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
159 config_list_foreach "$cfg" "pxe_service" append_pxe_service
160 config_get DOMAIN "$cfg" domain
162 config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
163 config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
165 config_get_bool readethers "$cfg" readethers
166 [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
168 config_get leasefile $cfg leasefile
169 [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
170 config_get_bool cachelocal "$cfg" cachelocal 1
172 config_get hostsfile "$cfg" dhcphostsfile
173 [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
175 mkdir -p /tmp/hosts /tmp/dnsmasq.d
176 xappend "--addn-hosts=/tmp/hosts"
177 xappend "--conf-dir=/tmp/dnsmasq.d"
180 config_get_bool rebind "$cfg" rebind_protection 1
181 [ $rebind -gt 0 ] && {
183 "DNS rebinding protection is active," \
184 "will discard upstream RFC1918 responses!"
185 xappend "--stop-dns-rebind"
187 local rebind_localhost
188 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
189 [ $rebind_localhost -gt 0 ] && {
190 log_once "Allowing 127.0.0.0/8 responses"
191 xappend "--rebind-localhost-ok"
194 append_rebind_domain() {
195 log_once "Allowing RFC1918 responses for domain $1"
196 xappend "--rebind-domain-ok=$1"
199 config_list_foreach "$cfg" rebind_domain append_rebind_domain
202 config_get_bool dnssec "$cfg" dnssec 0
203 [ "$dnssec" -gt 0 ] && {
204 xappend "--conf-file=$TRUSTANCHORSFILE"
206 append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
209 dhcp_option_add "$cfg" "" 0
211 xappend "--dhcp-broadcast=tag:needs-broadcast"
216 dhcp_subscrid_add() {
219 config_get networkid "$cfg" networkid
220 [ -n "$networkid" ] || return 0
222 config_get subscriberid "$cfg" subscriberid
223 [ -n "$subscriberid" ] || return 0
225 xappend "--dhcp-subscrid=$networkid,$subscriberid"
227 config_get_bool force "$cfg" force 0
229 dhcp_option_add "$cfg" "$networkid" "$force"
232 dhcp_remoteid_add() {
235 config_get networkid "$cfg" networkid
236 [ -n "$networkid" ] || return 0
238 config_get remoteid "$cfg" remoteid
239 [ -n "$remoteid" ] || return 0
241 xappend "--dhcp-remoteid=$networkid,$remoteid"
243 config_get_bool force "$cfg" force 0
245 dhcp_option_add "$cfg" "$networkid" "$force"
248 dhcp_circuitid_add() {
251 config_get networkid "$cfg" networkid
252 [ -n "$networkid" ] || return 0
254 config_get circuitid "$cfg" circuitid
255 [ -n "$circuitid" ] || return 0
257 xappend "--dhcp-circuitid=$networkid,$circuitid"
259 config_get_bool force "$cfg" force 0
261 dhcp_option_add "$cfg" "$networkid" "$force"
264 dhcp_userclass_add() {
267 config_get networkid "$cfg" networkid
268 [ -n "$networkid" ] || return 0
270 config_get userclass "$cfg" userclass
271 [ -n "$userclass" ] || return 0
273 xappend "--dhcp-userclass=$networkid,$userclass"
275 config_get_bool force "$cfg" force 0
277 dhcp_option_add "$cfg" "$networkid" "$force"
280 dhcp_vendorclass_add() {
283 config_get networkid "$cfg" networkid
284 [ -n "$networkid" ] || return 0
286 config_get vendorclass "$cfg" vendorclass
287 [ -n "$vendorclass" ] || return 0
289 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
291 config_get_bool force "$cfg" force 0
293 dhcp_option_add "$cfg" "$networkid" "$force"
299 config_get_bool force "$cfg" force 0
301 config_get networkid "$cfg" networkid
302 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
304 config_get name "$cfg" name
305 config_get ip "$cfg" ip
306 [ -n "$ip" -o -n "$name" ] || return 0
308 config_get_bool dns "$cfg" dns 0
309 [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
310 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
313 config_get mac "$cfg" mac
314 if [ -n "$mac" ]; then
315 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
317 for m in $mac; do append macs "$m" ","; done
319 # --dhcp-host=lap,192.168.0.199
320 [ -n "$name" ] || return 0
325 config_get tag "$cfg" tag
327 config_get_bool broadcast "$cfg" broadcast 0
328 [ "$broadcast" = "0" ] && broadcast=
330 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
338 [ -n "$tag" ] || return 0
340 config_get_bool force "$cfg" force 0
341 [ "$force" = "0" ] && force=
343 config_get option "$cfg" dhcp_option
345 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
352 config_get networkid "$cfg" networkid
353 [ -n "$networkid" ] || return 0
355 config_get mac "$cfg" mac
356 [ -n "$mac" ] || return 0
358 xappend "--dhcp-mac=$networkid,$mac"
360 dhcp_option_add "$cfg" "$networkid"
366 config_get networkid "$cfg" networkid
368 config_get filename "$cfg" filename
369 [ -n "$filename" ] || return 0
371 config_get servername "$cfg" servername
372 config_get serveraddress "$cfg" serveraddress
374 [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
376 xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
378 config_get_bool force "$cfg" force 0
380 dhcp_option_add "$cfg" "$networkid" "$force"
386 config_get net "$cfg" interface
387 [ -n "$net" ] || return 0
389 config_get dhcpv4 "$cfg" dhcpv4
390 [ "$dhcpv4" != "disabled" ] || return 0
392 config_get networkid "$cfg" networkid
393 [ -n "$networkid" ] || networkid="$net"
395 network_get_subnet subnet "$net" || return 0
396 network_get_device ifname "$net" || return 0
397 network_get_protocol proto "$net" || return 0
399 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
400 DNS_SERVERS="$DNS_SERVERS $dnsserver"
403 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
405 # Do not support non-static interfaces for now
406 [ static = "$proto" ] || return 0
408 # Override interface netmask with dhcp config if applicable
409 config_get netmask "$cfg" netmask "${subnet##*/}"
411 #check for an already active dhcp server on the interface, unless 'force' is set
412 config_get_bool force "$cfg" force 0
413 [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
415 config_get start "$cfg" start
416 config_get limit "$cfg" limit
417 config_get leasetime "$cfg" leasetime
418 config_get options "$cfg" options
419 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
421 leasetime="${leasetime:-12h}"
422 start="$(dhcp_calc "${start:-100}")"
423 limit="${limit:-150}"
424 [ "$limit" -gt 0 ] && limit=$((limit-1))
425 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
426 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
427 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
429 dhcp_option_add "$cfg" "$networkid"
437 [ "$force" = "0" ] && force=
439 config_get dhcp_option "$cfg" dhcp_option
440 for o in $dhcp_option; do
441 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
448 local ip name names record
450 config_get names "$cfg" name "$2"
451 [ -n "$names" ] || return 0
453 config_get ip "$cfg" ip "$3"
454 [ -n "$ip" ] || return 0
456 for name in $names; do
457 record="${record:+$record }$name"
460 echo "$ip $record" >> $HOSTFILE
466 config_get srv "$cfg" srv
467 [ -n "$srv" ] || return 0
469 config_get target "$cfg" target
470 [ -n "$target" ] || return 0
472 config_get port "$cfg" port
473 [ -n "$port" ] || return 0
475 config_get class "$cfg" class
476 config_get weight "$cfg" weight
478 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
480 xappend "--srv-host=$service"
485 local domain relay pref
487 config_get domain "$cfg" domain
488 [ -n "$domain" ] || return 0
490 config_get relay "$cfg" relay
491 [ -n "$relay" ] || return 0
493 config_get pref "$cfg" pref 0
495 local service="$domain,$relay,$pref"
497 xappend "--mx-host=$service"
504 config_get cname "$cfg" cname
505 [ -n "$cname" ] || return 0
507 config_get target "$cfg" target
508 [ -n "$target" ] || return 0
510 xappend "--cname=${cname},${target}"
513 dhcp_hostrecord_add() {
515 local names addresses record val
517 config_get names "$cfg" name "$2"
518 if [ -z "$names" ]; then
522 config_get addresses "$cfg" ip "$3"
523 if [ -z "$addresses" ]; then
527 for val in $names $addresses; do
528 record="${record:+$record,}$val"
531 xappend "--host-record=$record"
536 procd_add_reload_trigger "dhcp"
540 # Will be launched through hotplug
545 include /lib/functions
550 procd_set_param command $PROG -C $CONFIGFILE -k
551 procd_set_param file $CONFIGFILE
552 procd_set_param respawn
555 # before we can call xappend
556 mkdir -p $(dirname $CONFIGFILE)
558 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
559 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
561 # if we did this last, we could override auto-generated config
562 [ -f /etc/dnsmasq.conf ] && {
563 xappend "--conf-file=/etc/dnsmasq.conf"
567 config_foreach dnsmasq dnsmasq
568 config_foreach dhcp_host_add host
570 config_foreach dhcp_boot_add boot
571 config_foreach dhcp_mac_add mac
572 config_foreach dhcp_tag_add tag
573 config_foreach dhcp_vendorclass_add vendorclass
574 config_foreach dhcp_userclass_add userclass
575 config_foreach dhcp_circuitid_add circuitid
576 config_foreach dhcp_remoteid_add remoteid
577 config_foreach dhcp_subscrid_add subscrid
578 config_foreach dhcp_domain_add domain
579 config_foreach dhcp_hostrecord_add hostrecord
583 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr "lan" && {
584 local hostname="$(uci_get system @system[0] hostname OpenWrt)"
585 dhcp_domain_add "" "$hostname" "$lanaddr"
589 config_foreach dhcp_srv_add srvhost
590 config_foreach dhcp_mx_add mxhost
593 config_get odhcpd_is_active odhcpd maindhcp
594 if [ "$odhcpd_is_active" != "1" ]; then
595 config_foreach dhcp_add dhcp
599 config_foreach dhcp_cname_add cname
602 rm -f /tmp/resolv.conf
603 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
604 echo "search $DOMAIN" >> /tmp/resolv.conf
606 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
607 for DNS_SERVER in $DNS_SERVERS ; do
608 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
613 rc_procd start_service "$@"
618 [ -f /tmp/resolv.conf ] && {
619 rm -f /tmp/resolv.conf
620 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
622 rm -f /var/run/dnsmasq.*.dhcp