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"
18 TIMESTAMPFILE="/etc/dnsmasq.time"
23 echo "${value#--}" >> $CONFIGFILE
30 while [ -n "$ip" ]; do
33 res="$(($res + $part))"
34 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
41 local stamp="/var/run/dnsmasq.$ifname.dhcp"
44 [ -s "$stamp" ] && return $(cat "$stamp")
46 udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
50 "found already running DHCP-server on interface '$ifname'" \
51 "refusing to start, use 'option force 1' to override"
58 pidof dnsmasq >/dev/null || \
59 logger -t dnsmasq "$@"
67 config_get_bool _loctmp "$section" "$option" 0
68 [ $_loctmp -gt 0 ] && xappend "$value"
76 config_get _loctmp "$section" "$option"
77 [ -z "$_loctmp" ] && return 0
78 xappend "$switch=$_loctmp"
86 xappend "--address=$1"
94 local ifname=$(uci_get_state network "$1" ifname "$1")
95 xappend "--interface=$ifname"
98 append_notinterface() {
99 local ifname=$(uci_get_state network "$1" ifname "$1")
100 xappend "--except-interface=$ifname"
104 xappend "--addn-hosts=$1"
107 append_bogusnxdomain() {
108 xappend "--bogus-nxdomain=$1"
111 append_pxe_service() {
112 xappend "--pxe-service=$1"
117 append_bool "$cfg" authoritative "--dhcp-authoritative"
118 append_bool "$cfg" nodaemon "--no-daemon"
119 append_bool "$cfg" domainneeded "--domain-needed"
120 append_bool "$cfg" filterwin2k "--filterwin2k"
121 append_bool "$cfg" nohosts "--no-hosts"
122 append_bool "$cfg" nonegcache "--no-negcache"
123 append_bool "$cfg" strictorder "--strict-order"
124 append_bool "$cfg" logqueries "--log-queries"
125 append_bool "$cfg" noresolv "--no-resolv"
126 append_bool "$cfg" localise_queries "--localise-queries"
127 append_bool "$cfg" readethers "--read-ethers"
128 append_bool "$cfg" dbus "--enable-dbus"
129 append_bool "$cfg" boguspriv "--bogus-priv"
130 append_bool "$cfg" expandhosts "--expand-hosts"
131 append_bool "$cfg" enable_tftp "--enable-tftp"
132 append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
133 append_bool "$cfg" nonwildcard "--bind-interfaces"
134 append_bool "$cfg" fqdn "--dhcp-fqdn"
135 append_bool "$cfg" proxydnssec "--proxy-dnssec"
136 append_bool "$cfg" localservice "--local-service"
137 append_bool "$cfg" quietdhcp "--quiet-dhcp"
139 append_parm "$cfg" dhcpscript "--dhcp-script"
140 append_parm "$cfg" cachesize "--cache-size"
141 append_parm "$cfg" dnsforwardmax "--dns-forward-max"
142 append_parm "$cfg" port "--port"
143 append_parm "$cfg" ednspacket_max "--edns-packet-max"
144 append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
145 append_parm "$cfg" "queryport" "--query-port"
146 append_parm "$cfg" "domain" "--domain"
147 append_parm "$cfg" "local" "--server"
148 config_list_foreach "$cfg" "server" append_server
149 config_list_foreach "$cfg" "address" append_address
150 config_list_foreach "$cfg" "ipset" append_ipset
151 config_list_foreach "$cfg" "interface" append_interface
152 config_list_foreach "$cfg" "notinterface" append_notinterface
153 config_list_foreach "$cfg" "addnhosts" append_addnhosts
154 config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
155 append_parm "$cfg" "leasefile" "--dhcp-leasefile"
156 append_parm "$cfg" "resolvfile" "--resolv-file"
157 append_parm "$cfg" "serversfile" "--servers-file"
158 append_parm "$cfg" "tftp_root" "--tftp-root"
159 append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
160 append_parm "$cfg" "local_ttl" "--local-ttl"
161 append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
162 config_list_foreach "$cfg" "pxe_service" append_pxe_service
163 config_get DOMAIN "$cfg" domain
165 config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
166 config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
168 config_get_bool readethers "$cfg" readethers
169 [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
171 config_get leasefile $cfg leasefile
172 [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
173 config_get_bool cachelocal "$cfg" cachelocal 1
175 config_get hostsfile "$cfg" dhcphostsfile
176 [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
178 mkdir -p /tmp/hosts /tmp/dnsmasq.d
179 xappend "--addn-hosts=/tmp/hosts"
180 xappend "--conf-dir=/tmp/dnsmasq.d"
183 config_get_bool rebind "$cfg" rebind_protection 1
184 [ $rebind -gt 0 ] && {
186 "DNS rebinding protection is active," \
187 "will discard upstream RFC1918 responses!"
188 xappend "--stop-dns-rebind"
190 local rebind_localhost
191 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
192 [ $rebind_localhost -gt 0 ] && {
193 log_once "Allowing 127.0.0.0/8 responses"
194 xappend "--rebind-localhost-ok"
197 append_rebind_domain() {
198 log_once "Allowing RFC1918 responses for domain $1"
199 xappend "--rebind-domain-ok=$1"
202 config_list_foreach "$cfg" rebind_domain append_rebind_domain
205 config_get_bool dnssec "$cfg" dnssec 0
206 [ "$dnssec" -gt 0 ] && {
207 xappend "--conf-file=$TRUSTANCHORSFILE"
209 xappend "--dnssec-timestamp=$TIMESTAMPFILE"
210 append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
213 dhcp_option_add "$cfg" "" 0
215 xappend "--dhcp-broadcast=tag:needs-broadcast"
220 dhcp_subscrid_add() {
223 config_get networkid "$cfg" networkid
224 [ -n "$networkid" ] || return 0
226 config_get subscriberid "$cfg" subscriberid
227 [ -n "$subscriberid" ] || return 0
229 xappend "--dhcp-subscrid=$networkid,$subscriberid"
231 config_get_bool force "$cfg" force 0
233 dhcp_option_add "$cfg" "$networkid" "$force"
236 dhcp_remoteid_add() {
239 config_get networkid "$cfg" networkid
240 [ -n "$networkid" ] || return 0
242 config_get remoteid "$cfg" remoteid
243 [ -n "$remoteid" ] || return 0
245 xappend "--dhcp-remoteid=$networkid,$remoteid"
247 config_get_bool force "$cfg" force 0
249 dhcp_option_add "$cfg" "$networkid" "$force"
252 dhcp_circuitid_add() {
255 config_get networkid "$cfg" networkid
256 [ -n "$networkid" ] || return 0
258 config_get circuitid "$cfg" circuitid
259 [ -n "$circuitid" ] || return 0
261 xappend "--dhcp-circuitid=$networkid,$circuitid"
263 config_get_bool force "$cfg" force 0
265 dhcp_option_add "$cfg" "$networkid" "$force"
268 dhcp_userclass_add() {
271 config_get networkid "$cfg" networkid
272 [ -n "$networkid" ] || return 0
274 config_get userclass "$cfg" userclass
275 [ -n "$userclass" ] || return 0
277 xappend "--dhcp-userclass=$networkid,$userclass"
279 config_get_bool force "$cfg" force 0
281 dhcp_option_add "$cfg" "$networkid" "$force"
284 dhcp_vendorclass_add() {
287 config_get networkid "$cfg" networkid
288 [ -n "$networkid" ] || return 0
290 config_get vendorclass "$cfg" vendorclass
291 [ -n "$vendorclass" ] || return 0
293 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
295 config_get_bool force "$cfg" force 0
297 dhcp_option_add "$cfg" "$networkid" "$force"
303 config_get_bool force "$cfg" force 0
305 config_get networkid "$cfg" networkid
306 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
308 config_get name "$cfg" name
309 config_get ip "$cfg" ip
310 [ -n "$ip" -o -n "$name" ] || return 0
312 config_get_bool dns "$cfg" dns 0
313 [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
314 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
317 config_get mac "$cfg" mac
318 if [ -n "$mac" ]; then
319 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
321 for m in $mac; do append macs "$m" ","; done
323 # --dhcp-host=lap,192.168.0.199
324 [ -n "$name" ] || return 0
329 config_get tag "$cfg" tag
331 config_get_bool broadcast "$cfg" broadcast 0
332 [ "$broadcast" = "0" ] && broadcast=
334 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
342 [ -n "$tag" ] || return 0
344 config_get_bool force "$cfg" force 0
345 [ "$force" = "0" ] && force=
347 config_get option "$cfg" dhcp_option
349 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
356 config_get networkid "$cfg" networkid
357 [ -n "$networkid" ] || return 0
359 config_get mac "$cfg" mac
360 [ -n "$mac" ] || return 0
362 xappend "--dhcp-mac=$networkid,$mac"
364 dhcp_option_add "$cfg" "$networkid"
370 config_get networkid "$cfg" networkid
372 config_get filename "$cfg" filename
373 [ -n "$filename" ] || return 0
375 config_get servername "$cfg" servername
376 config_get serveraddress "$cfg" serveraddress
378 [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
380 xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
382 config_get_bool force "$cfg" force 0
384 dhcp_option_add "$cfg" "$networkid" "$force"
390 config_get net "$cfg" interface
391 [ -n "$net" ] || return 0
393 config_get dhcpv4 "$cfg" dhcpv4
394 [ "$dhcpv4" != "disabled" ] || return 0
396 config_get networkid "$cfg" networkid
397 [ -n "$networkid" ] || networkid="$net"
399 network_get_subnet subnet "$net" || return 0
400 network_get_device ifname "$net" || return 0
401 network_get_protocol proto "$net" || return 0
403 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
404 DNS_SERVERS="$DNS_SERVERS $dnsserver"
407 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
409 # Do not support non-static interfaces for now
410 [ static = "$proto" ] || return 0
412 # Override interface netmask with dhcp config if applicable
413 config_get netmask "$cfg" netmask "${subnet##*/}"
415 #check for an already active dhcp server on the interface, unless 'force' is set
416 config_get_bool force "$cfg" force 0
417 [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
419 config_get start "$cfg" start
420 config_get limit "$cfg" limit
421 config_get leasetime "$cfg" leasetime
422 config_get options "$cfg" options
423 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
425 leasetime="${leasetime:-12h}"
426 start="$(dhcp_calc "${start:-100}")"
427 limit="${limit:-150}"
428 [ "$limit" -gt 0 ] && limit=$((limit-1))
429 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
430 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
431 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
433 dhcp_option_add "$cfg" "$networkid"
441 [ "$force" = "0" ] && force=
443 config_get dhcp_option "$cfg" dhcp_option
444 for o in $dhcp_option; do
445 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
452 local ip name names record
454 config_get names "$cfg" name "$2"
455 [ -n "$names" ] || return 0
457 config_get ip "$cfg" ip "$3"
458 [ -n "$ip" ] || return 0
460 for name in $names; do
461 record="${record:+$record }$name"
464 echo "$ip $record" >> $HOSTFILE
470 config_get srv "$cfg" srv
471 [ -n "$srv" ] || return 0
473 config_get target "$cfg" target
474 [ -n "$target" ] || return 0
476 config_get port "$cfg" port
477 [ -n "$port" ] || return 0
479 config_get class "$cfg" class
480 config_get weight "$cfg" weight
482 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
484 xappend "--srv-host=$service"
489 local domain relay pref
491 config_get domain "$cfg" domain
492 [ -n "$domain" ] || return 0
494 config_get relay "$cfg" relay
495 [ -n "$relay" ] || return 0
497 config_get pref "$cfg" pref 0
499 local service="$domain,$relay,$pref"
501 xappend "--mx-host=$service"
508 config_get cname "$cfg" cname
509 [ -n "$cname" ] || return 0
511 config_get target "$cfg" target
512 [ -n "$target" ] || return 0
514 xappend "--cname=${cname},${target}"
517 dhcp_hostrecord_add() {
519 local names addresses record val
521 config_get names "$cfg" name "$2"
522 if [ -z "$names" ]; then
526 config_get addresses "$cfg" ip "$3"
527 if [ -z "$addresses" ]; then
531 for val in $names $addresses; do
532 record="${record:+$record,}$val"
535 xappend "--host-record=$record"
540 procd_add_reload_trigger "dhcp"
544 # Will be launched through hotplug
549 include /lib/functions
554 procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq.pid
555 procd_set_param file $CONFIGFILE
556 procd_set_param respawn
558 procd_add_jail dnsmasq ubus log
559 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
560 procd_add_jail_mount_rw /var/run/dnsmasq/ /tmp/dhcp.leases $TIMESTAMPFILE
564 # before we can call xappend
565 mkdir -p /var/run/dnsmasq/
566 mkdir -p $(dirname $CONFIGFILE)
567 mkdir -p /var/lib/misc
568 touch /tmp/dhcp.leases
570 if [ ! -f "$TIMESTAMPFILE" ]; then
571 touch "$TIMESTAMPFILE"
572 chown nobody.nogroup "$TIMESTAMPFILE"
575 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
576 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
578 # if we did this last, we could override auto-generated config
579 [ -f /etc/dnsmasq.conf ] && {
580 xappend "--conf-file=/etc/dnsmasq.conf"
584 config_foreach dnsmasq dnsmasq
585 config_foreach dhcp_host_add host
587 config_foreach dhcp_boot_add boot
588 config_foreach dhcp_mac_add mac
589 config_foreach dhcp_tag_add tag
590 config_foreach dhcp_vendorclass_add vendorclass
591 config_foreach dhcp_userclass_add userclass
592 config_foreach dhcp_circuitid_add circuitid
593 config_foreach dhcp_remoteid_add remoteid
594 config_foreach dhcp_subscrid_add subscrid
595 config_foreach dhcp_domain_add domain
596 config_foreach dhcp_hostrecord_add hostrecord
600 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr "lan" && {
601 local hostname="$(uci_get system @system[0] hostname OpenWrt)"
602 dhcp_domain_add "" "$hostname" "$lanaddr"
606 config_foreach dhcp_srv_add srvhost
607 config_foreach dhcp_mx_add mxhost
610 config_get odhcpd_is_active odhcpd maindhcp
611 if [ "$odhcpd_is_active" != "1" ]; then
612 config_foreach dhcp_add dhcp
616 config_foreach dhcp_cname_add cname
619 rm -f /tmp/resolv.conf
620 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
621 echo "search $DOMAIN" >> /tmp/resolv.conf
623 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
624 for DNS_SERVER in $DNS_SERVERS ; do
625 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
630 rc_procd start_service "$@"
635 [ -f /tmp/resolv.conf ] && {
636 rm -f /tmp/resolv.conf
637 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
639 rm -f /var/run/dnsmasq.*.dhcp