1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2007-2012 OpenWrt.org
15 CONFIGFILE="/var/etc/dnsmasq.conf"
20 echo "${value#--}" >> $CONFIGFILE
27 while [ -n "$ip" ]; do
30 res="$(($res + $part))"
31 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
38 local stamp="/var/run/dnsmasq.$ifname.dhcp"
41 [ -s "$stamp" ] && return $(cat "$stamp")
43 udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
47 "found already running DHCP-server on interface '$ifname'" \
48 "refusing to start, use 'option force 1' to override"
55 pidof dnsmasq >/dev/null || \
56 logger -t dnsmasq "$@"
64 config_get_bool _loctmp "$section" "$option" 0
65 [ $_loctmp -gt 0 ] && xappend "$value"
73 config_get _loctmp "$section" "$option"
74 [ -z "$_loctmp" ] && return 0
75 xappend "$switch=$_loctmp"
83 xappend "--address=$1"
87 local ifname=$(uci_get_state network "$1" ifname "$1")
88 xappend "--interface=$ifname"
91 append_notinterface() {
92 local ifname=$(uci_get_state network "$1" ifname "$1")
93 xappend "--except-interface=$ifname"
97 xappend "--addn-hosts=$1"
100 append_bogusnxdomain() {
101 xappend "--bogus-nxdomain=$1"
106 append_bool "$cfg" authoritative "--dhcp-authoritative"
107 append_bool "$cfg" nodaemon "--no-daemon"
108 append_bool "$cfg" domainneeded "--domain-needed"
109 append_bool "$cfg" filterwin2k "--filterwin2k"
110 append_bool "$cfg" nohosts "--no-hosts"
111 append_bool "$cfg" nonegcache "--no-negcache"
112 append_bool "$cfg" strictorder "--strict-order"
113 append_bool "$cfg" logqueries "--log-queries"
114 append_bool "$cfg" noresolv "--no-resolv"
115 append_bool "$cfg" localise_queries "--localise-queries"
116 append_bool "$cfg" readethers "--read-ethers"
117 append_bool "$cfg" dbus "--enable-dbus"
118 append_bool "$cfg" boguspriv "--bogus-priv"
119 append_bool "$cfg" expandhosts "--expand-hosts"
120 append_bool "$cfg" enable_tftp "--enable-tftp"
121 append_bool "$cfg" nonwildcard "--bind-interfaces"
122 append_bool "$cfg" fqdn "--dhcp-fqdn"
123 append_bool "$cfg" proxydnssec "--proxy-dnssec"
125 append_parm "$cfg" dhcpscript "--dhcp-script"
126 append_parm "$cfg" cachesize "--cache-size"
127 append_parm "$cfg" dnsforwardmax "--dns-forward-max"
128 append_parm "$cfg" port "--port"
129 append_parm "$cfg" ednspacket_max "--edns-packet-max"
130 append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
131 append_parm "$cfg" "queryport" "--query-port"
132 append_parm "$cfg" "domain" "--domain"
133 append_parm "$cfg" "local" "--server"
134 config_list_foreach "$cfg" "server" append_server
135 config_list_foreach "$cfg" "address" append_address
136 config_list_foreach "$cfg" "interface" append_interface
137 config_list_foreach "$cfg" "notinterface" append_notinterface
138 config_list_foreach "$cfg" "addnhosts" append_addnhosts
139 config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
140 append_parm "$cfg" "leasefile" "--dhcp-leasefile"
141 append_parm "$cfg" "resolvfile" "--resolv-file"
142 append_parm "$cfg" "tftp_root" "--tftp-root"
143 append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
144 append_parm "$cfg" "local_ttl" "--local-ttl"
146 config_get DOMAIN "$cfg" domain
148 config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
149 config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
151 config_get_bool readethers "$cfg" readethers
152 [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
154 config_get leasefile $cfg leasefile
155 [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
156 config_get_bool cachelocal "$cfg" cachelocal 1
158 config_get hostsfile "$cfg" dhcphostsfile
159 [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
162 xappend "--addn-hosts=/tmp/hosts"
165 config_get_bool rebind "$cfg" rebind_protection 1
166 [ $rebind -gt 0 ] && {
168 "DNS rebinding protection is active," \
169 "will discard upstream RFC1918 responses!"
170 xappend "--stop-dns-rebind"
172 local rebind_localhost
173 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
174 [ $rebind_localhost -gt 0 ] && {
175 log_once "Allowing 127.0.0.0/8 responses"
176 xappend "--rebind-localhost-ok"
179 append_rebind_domain() {
180 log_once "Allowing RFC1918 responses for domain $1"
181 xappend "--rebind-domain-ok=$1"
184 config_list_foreach "$cfg" rebind_domain append_rebind_domain
187 dhcp_option_add "$cfg" "" 0
189 xappend "--dhcp-broadcast=tag:needs-broadcast"
194 dhcp_subscrid_add() {
197 config_get networkid "$cfg" networkid
198 [ -n "$networkid" ] || return 0
200 config_get subscriberid "$cfg" subscriberid
201 [ -n "$subscriberid" ] || return 0
203 xappend "--dhcp-subscrid=$networkid,$subscriberid"
205 config_get_bool force "$cfg" force 0
207 dhcp_option_add "$cfg" "$networkid" "$force"
210 dhcp_remoteid_add() {
213 config_get networkid "$cfg" networkid
214 [ -n "$networkid" ] || return 0
216 config_get remoteid "$cfg" remoteid
217 [ -n "$remoteid" ] || return 0
219 xappend "--dhcp-remoteid=$networkid,$remoteid"
221 config_get_bool force "$cfg" force 0
223 dhcp_option_add "$cfg" "$networkid" "$force"
226 dhcp_circuitid_add() {
229 config_get networkid "$cfg" networkid
230 [ -n "$networkid" ] || return 0
232 config_get circuitid "$cfg" circuitid
233 [ -n "$circuitid" ] || return 0
235 xappend "--dhcp-circuitid=$networkid,$circuitid"
237 config_get_bool force "$cfg" force 0
239 dhcp_option_add "$cfg" "$networkid" "$force"
242 dhcp_userclass_add() {
245 config_get networkid "$cfg" networkid
246 [ -n "$networkid" ] || return 0
248 config_get userclass "$cfg" userclass
249 [ -n "$userclass" ] || return 0
251 xappend "--dhcp-userclass=$networkid,$userclass"
253 config_get_bool force "$cfg" force 0
255 dhcp_option_add "$cfg" "$networkid" "$force"
258 dhcp_vendorclass_add() {
261 config_get networkid "$cfg" networkid
262 [ -n "$networkid" ] || return 0
264 config_get vendorclass "$cfg" vendorclass
265 [ -n "$vendorclass" ] || return 0
267 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
269 config_get_bool force "$cfg" force 0
271 dhcp_option_add "$cfg" "$networkid" "$force"
277 config_get_bool force "$cfg" force 0
279 config_get networkid "$cfg" networkid
280 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
282 config_get name "$cfg" name
283 config_get ip "$cfg" ip
284 [ -n "$ip" -o -n "$name" ] || return 0
286 config_get mac "$cfg" mac
288 [ -n "$name" ] || return 0
294 for m in $mac; do append macs "$m" ","; done
296 config_get tag "$cfg" tag
298 config_get_bool broadcast "$cfg" broadcast 0
299 [ "$broadcast" = "0" ] && broadcast=
301 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
309 [ -n "$tag" ] || return 0
311 config_get_bool force "$cfg" force 0
312 [ "$force" = "0" ] && force=
314 config_get option "$cfg" dhcp_option
316 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
323 config_get networkid "$cfg" networkid
324 [ -n "$networkid" ] || return 0
326 config_get mac "$cfg" mac
327 [ -n "$mac" ] || return 0
329 xappend "--dhcp-mac=$networkid,$mac"
331 dhcp_option_add "$cfg" "$networkid"
337 config_get networkid "$cfg" networkid
339 config_get filename "$cfg" filename
340 [ -n "$filename" ] || return 0
342 config_get servername "$cfg" servername
343 [ -n "$servername" ] || return 0
345 config_get serveraddress "$cfg" serveraddress
346 [ -n "$serveraddress" ] || return 0
348 xappend "--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress"
350 config_get_bool force "$cfg" force 0
352 dhcp_option_add "$cfg" "$networkid" "$force"
358 config_get net "$cfg" interface
359 [ -n "$net" ] || return 0
361 config_get networkid "$cfg" networkid
362 [ -n "$networkid" ] || networkid="$net"
364 network_get_subnet subnet "$net" || return 0
365 network_get_device ifname "$net" || return 0
366 network_get_protocol proto "$net" || return 0
368 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
369 DNS_SERVERS="$DNS_SERVERS $dnsserver"
372 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
374 # Do not support non-static interfaces for now
375 [ static = "$proto" ] || return 0
377 # Override interface netmask with dhcp config if applicable
378 config_get netmask "$cfg" netmask "${subnet##*/}"
380 #check for an already active dhcp server on the interface, unless 'force' is set
381 config_get_bool force "$cfg" force 0
382 [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
384 config_get start "$cfg" start
385 config_get limit "$cfg" limit
386 config_get leasetime "$cfg" leasetime
387 config_get options "$cfg" options
388 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
390 leasetime="${leasetime:-12h}"
391 start="$(dhcp_calc "${start:-100}")"
392 limit="${limit:-150}"
393 [ "$limit" -gt 0 ] && limit=$((limit-1))
394 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
395 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
396 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
398 dhcp_option_add "$cfg" "$networkid"
406 [ "$force" = "0" ] && force=
408 config_get dhcp_option "$cfg" dhcp_option
409 for o in $dhcp_option; do
410 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
417 local ip name names record
419 config_get names "$cfg" name "$2"
420 [ -n "$names" ] || return 0
422 config_get ip "$cfg" ip "$3"
423 [ -n "$ip" ] || return 0
425 for name in $names; do
426 [ "${name%.*}" == "$name" ] && \
427 name="$name${DOMAIN:+.$DOMAIN}"
429 record="${record:+$record/}$name"
432 xappend "--address=/$record/$ip"
438 config_get srv "$cfg" srv
439 [ -n "$srv" ] || return 0
441 config_get target "$cfg" target
442 [ -n "$target" ] || return 0
444 config_get port "$cfg" port
445 [ -n "$port" ] || return 0
447 config_get class "$cfg" class
448 config_get weight "$cfg" weight
450 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
452 xappend "--srv-host=$service"
457 local domain relay pref
459 config_get domain "$cfg" domain
460 [ -n "$domain" ] || return 0
462 config_get relay "$cfg" relay
463 [ -n "$relay" ] || return 0
465 config_get pref "$cfg" pref 0
467 local service="$domain,$relay,$pref"
469 xappend "--mx-host=$service"
476 config_get cname "$cfg" cname
477 [ -n "$cname" ] || return 0
479 config_get target "$cfg" target
480 [ -n "$target" ] || return 0
482 xappend "--cname=${cname},${target}"
485 dhcp_hostrecord_add() {
487 local names addresses record val
489 config_get names "$cfg" name "$2"
490 if [ -z "$names" ]; then
494 config_get addresses "$cfg" ip "$3"
495 if [ -z "$addresses" ]; then
499 for val in $names $addresses; do
500 record="${record:+$record,}$val"
503 xappend "--host-record=$record"
508 procd_add_reload_trigger "dhcp"
512 # Will be launched through hotplug
517 include /lib/functions
522 procd_set_param command $PROG -C $CONFIGFILE -k
523 procd_set_param file $CONFIGFILE
526 # before we can call xappend
527 mkdir -p $(dirname $CONFIGFILE)
529 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
531 # if we did this last, we could override auto-generated config
532 [ -f /etc/dnsmasq.conf ] && {
533 xappend "--conf-file=/etc/dnsmasq.conf"
537 config_foreach dnsmasq dnsmasq
538 config_foreach dhcp_host_add host
540 config_foreach dhcp_boot_add boot
541 config_foreach dhcp_mac_add mac
542 config_foreach dhcp_tag_add tag
543 config_foreach dhcp_vendorclass_add vendorclass
544 config_foreach dhcp_userclass_add userclass
545 config_foreach dhcp_circuitid_add circuitid
546 config_foreach dhcp_remoteid_add remoteid
547 config_foreach dhcp_subscrid_add subscrid
548 config_foreach dhcp_domain_add domain
549 config_foreach dhcp_hostrecord_add hostrecord
553 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr "lan" && {
554 local hostname="$(uci_get system @system[0] hostname OpenWrt)"
555 dhcp_hostrecord_add "" "${hostname%.$DOMAIN}${DOMAIN:+.$DOMAIN ${hostname%.$DOMAIN}}" "$lanaddr"
559 config_foreach dhcp_srv_add srvhost
560 config_foreach dhcp_mx_add mxhost
562 config_foreach dhcp_add dhcp
564 config_foreach dhcp_cname_add cname
567 rm -f /tmp/resolv.conf
568 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
569 echo "search $DOMAIN" >> /tmp/resolv.conf
571 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
572 for DNS_SERVER in $DNS_SERVERS ; do
573 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
578 rc_procd start_service "$@"
583 [ -f /tmp/resolv.conf ] && {
584 rm -f /tmp/resolv.conf
585 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
587 rm -f /var/run/dnsmasq.*.dhcp