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 "$cfg" tftp_no_fail "--tftp-no-fail"
132 append_bool "$cfg" nonwildcard "--bind-interfaces"
133 append_bool "$cfg" fqdn "--dhcp-fqdn"
134 append_bool "$cfg" proxydnssec "--proxy-dnssec"
135 append_bool "$cfg" localservice "--local-service"
136 append_bool "$cfg" quietdhcp "--quiet-dhcp"
138 append_parm "$cfg" dhcpscript "--dhcp-script"
139 append_parm "$cfg" cachesize "--cache-size"
140 append_parm "$cfg" dnsforwardmax "--dns-forward-max"
141 append_parm "$cfg" port "--port"
142 append_parm "$cfg" ednspacket_max "--edns-packet-max"
143 append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
144 append_parm "$cfg" "queryport" "--query-port"
145 append_parm "$cfg" "domain" "--domain"
146 append_parm "$cfg" "local" "--server"
147 config_list_foreach "$cfg" "server" append_server
148 config_list_foreach "$cfg" "address" append_address
149 config_list_foreach "$cfg" "ipset" append_ipset
150 config_list_foreach "$cfg" "interface" append_interface
151 config_list_foreach "$cfg" "notinterface" append_notinterface
152 config_list_foreach "$cfg" "addnhosts" append_addnhosts
153 config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
154 append_parm "$cfg" "leasefile" "--dhcp-leasefile"
155 append_parm "$cfg" "resolvfile" "--resolv-file"
156 append_parm "$cfg" "tftp_root" "--tftp-root"
157 append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
158 append_parm "$cfg" "local_ttl" "--local-ttl"
159 append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
160 config_list_foreach "$cfg" "pxe_service" append_pxe_service
161 config_get DOMAIN "$cfg" domain
163 config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
164 config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
166 config_get_bool readethers "$cfg" readethers
167 [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
169 config_get leasefile $cfg leasefile
170 [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
171 config_get_bool cachelocal "$cfg" cachelocal 1
173 config_get hostsfile "$cfg" dhcphostsfile
174 [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
176 mkdir -p /tmp/hosts /tmp/dnsmasq.d
177 xappend "--addn-hosts=/tmp/hosts"
178 xappend "--conf-dir=/tmp/dnsmasq.d"
181 config_get_bool rebind "$cfg" rebind_protection 1
182 [ $rebind -gt 0 ] && {
184 "DNS rebinding protection is active," \
185 "will discard upstream RFC1918 responses!"
186 xappend "--stop-dns-rebind"
188 local rebind_localhost
189 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
190 [ $rebind_localhost -gt 0 ] && {
191 log_once "Allowing 127.0.0.0/8 responses"
192 xappend "--rebind-localhost-ok"
195 append_rebind_domain() {
196 log_once "Allowing RFC1918 responses for domain $1"
197 xappend "--rebind-domain-ok=$1"
200 config_list_foreach "$cfg" rebind_domain append_rebind_domain
203 config_get_bool dnssec "$cfg" dnssec 0
204 [ "$dnssec" -gt 0 ] && {
205 xappend "--conf-file=$TRUSTANCHORSFILE"
207 append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
210 dhcp_option_add "$cfg" "" 0
212 xappend "--dhcp-broadcast=tag:needs-broadcast"
217 dhcp_subscrid_add() {
220 config_get networkid "$cfg" networkid
221 [ -n "$networkid" ] || return 0
223 config_get subscriberid "$cfg" subscriberid
224 [ -n "$subscriberid" ] || return 0
226 xappend "--dhcp-subscrid=$networkid,$subscriberid"
228 config_get_bool force "$cfg" force 0
230 dhcp_option_add "$cfg" "$networkid" "$force"
233 dhcp_remoteid_add() {
236 config_get networkid "$cfg" networkid
237 [ -n "$networkid" ] || return 0
239 config_get remoteid "$cfg" remoteid
240 [ -n "$remoteid" ] || return 0
242 xappend "--dhcp-remoteid=$networkid,$remoteid"
244 config_get_bool force "$cfg" force 0
246 dhcp_option_add "$cfg" "$networkid" "$force"
249 dhcp_circuitid_add() {
252 config_get networkid "$cfg" networkid
253 [ -n "$networkid" ] || return 0
255 config_get circuitid "$cfg" circuitid
256 [ -n "$circuitid" ] || return 0
258 xappend "--dhcp-circuitid=$networkid,$circuitid"
260 config_get_bool force "$cfg" force 0
262 dhcp_option_add "$cfg" "$networkid" "$force"
265 dhcp_userclass_add() {
268 config_get networkid "$cfg" networkid
269 [ -n "$networkid" ] || return 0
271 config_get userclass "$cfg" userclass
272 [ -n "$userclass" ] || return 0
274 xappend "--dhcp-userclass=$networkid,$userclass"
276 config_get_bool force "$cfg" force 0
278 dhcp_option_add "$cfg" "$networkid" "$force"
281 dhcp_vendorclass_add() {
284 config_get networkid "$cfg" networkid
285 [ -n "$networkid" ] || return 0
287 config_get vendorclass "$cfg" vendorclass
288 [ -n "$vendorclass" ] || return 0
290 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
292 config_get_bool force "$cfg" force 0
294 dhcp_option_add "$cfg" "$networkid" "$force"
300 config_get_bool force "$cfg" force 0
302 config_get networkid "$cfg" networkid
303 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
305 config_get name "$cfg" name
306 config_get ip "$cfg" ip
307 [ -n "$ip" -o -n "$name" ] || return 0
309 config_get_bool dns "$cfg" dns 0
310 [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
311 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
314 config_get mac "$cfg" mac
315 if [ -n "$mac" ]; then
316 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
318 for m in $mac; do append macs "$m" ","; done
320 # --dhcp-host=lap,192.168.0.199
321 [ -n "$name" ] || return 0
326 config_get tag "$cfg" tag
328 config_get_bool broadcast "$cfg" broadcast 0
329 [ "$broadcast" = "0" ] && broadcast=
331 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
339 [ -n "$tag" ] || return 0
341 config_get_bool force "$cfg" force 0
342 [ "$force" = "0" ] && force=
344 config_get option "$cfg" dhcp_option
346 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
353 config_get networkid "$cfg" networkid
354 [ -n "$networkid" ] || return 0
356 config_get mac "$cfg" mac
357 [ -n "$mac" ] || return 0
359 xappend "--dhcp-mac=$networkid,$mac"
361 dhcp_option_add "$cfg" "$networkid"
367 config_get networkid "$cfg" networkid
369 config_get filename "$cfg" filename
370 [ -n "$filename" ] || return 0
372 config_get servername "$cfg" servername
373 config_get serveraddress "$cfg" serveraddress
375 [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
377 xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
379 config_get_bool force "$cfg" force 0
381 dhcp_option_add "$cfg" "$networkid" "$force"
387 config_get net "$cfg" interface
388 [ -n "$net" ] || return 0
390 config_get dhcpv4 "$cfg" dhcpv4
391 [ "$dhcpv4" != "disabled" ] || return 0
393 config_get networkid "$cfg" networkid
394 [ -n "$networkid" ] || networkid="$net"
396 network_get_subnet subnet "$net" || return 0
397 network_get_device ifname "$net" || return 0
398 network_get_protocol proto "$net" || return 0
400 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
401 DNS_SERVERS="$DNS_SERVERS $dnsserver"
404 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
406 # Do not support non-static interfaces for now
407 [ static = "$proto" ] || return 0
409 # Override interface netmask with dhcp config if applicable
410 config_get netmask "$cfg" netmask "${subnet##*/}"
412 #check for an already active dhcp server on the interface, unless 'force' is set
413 config_get_bool force "$cfg" force 0
414 [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
416 config_get start "$cfg" start
417 config_get limit "$cfg" limit
418 config_get leasetime "$cfg" leasetime
419 config_get options "$cfg" options
420 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
422 leasetime="${leasetime:-12h}"
423 start="$(dhcp_calc "${start:-100}")"
424 limit="${limit:-150}"
425 [ "$limit" -gt 0 ] && limit=$((limit-1))
426 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
427 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
428 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
430 dhcp_option_add "$cfg" "$networkid"
438 [ "$force" = "0" ] && force=
440 config_get dhcp_option "$cfg" dhcp_option
441 for o in $dhcp_option; do
442 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
449 local ip name names record
451 config_get names "$cfg" name "$2"
452 [ -n "$names" ] || return 0
454 config_get ip "$cfg" ip "$3"
455 [ -n "$ip" ] || return 0
457 for name in $names; do
458 record="${record:+$record }$name"
461 echo "$ip $record" >> $HOSTFILE
467 config_get srv "$cfg" srv
468 [ -n "$srv" ] || return 0
470 config_get target "$cfg" target
471 [ -n "$target" ] || return 0
473 config_get port "$cfg" port
474 [ -n "$port" ] || return 0
476 config_get class "$cfg" class
477 config_get weight "$cfg" weight
479 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
481 xappend "--srv-host=$service"
486 local domain relay pref
488 config_get domain "$cfg" domain
489 [ -n "$domain" ] || return 0
491 config_get relay "$cfg" relay
492 [ -n "$relay" ] || return 0
494 config_get pref "$cfg" pref 0
496 local service="$domain,$relay,$pref"
498 xappend "--mx-host=$service"
505 config_get cname "$cfg" cname
506 [ -n "$cname" ] || return 0
508 config_get target "$cfg" target
509 [ -n "$target" ] || return 0
511 xappend "--cname=${cname},${target}"
514 dhcp_hostrecord_add() {
516 local names addresses record val
518 config_get names "$cfg" name "$2"
519 if [ -z "$names" ]; then
523 config_get addresses "$cfg" ip "$3"
524 if [ -z "$addresses" ]; then
528 for val in $names $addresses; do
529 record="${record:+$record,}$val"
532 xappend "--host-record=$record"
537 procd_add_reload_trigger "dhcp"
541 # Will be launched through hotplug
546 include /lib/functions
551 procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq.pid
552 procd_set_param file $CONFIGFILE
553 procd_set_param respawn
555 procd_add_jail dnsmasq ubus log
556 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
557 procd_add_jail_mount_rw /var/run/dnsmasq/ /tmp/dhcp.leases
561 # before we can call xappend
562 mkdir -p /var/run/dnsmasq/
563 mkdir -p $(dirname $CONFIGFILE)
564 mkdir -p /var/lib/misc
565 touch /tmp/dhcp.leases
568 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
569 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
571 # if we did this last, we could override auto-generated config
572 [ -f /etc/dnsmasq.conf ] && {
573 xappend "--conf-file=/etc/dnsmasq.conf"
577 config_foreach dnsmasq dnsmasq
578 config_foreach dhcp_host_add host
580 config_foreach dhcp_boot_add boot
581 config_foreach dhcp_mac_add mac
582 config_foreach dhcp_tag_add tag
583 config_foreach dhcp_vendorclass_add vendorclass
584 config_foreach dhcp_userclass_add userclass
585 config_foreach dhcp_circuitid_add circuitid
586 config_foreach dhcp_remoteid_add remoteid
587 config_foreach dhcp_subscrid_add subscrid
588 config_foreach dhcp_domain_add domain
589 config_foreach dhcp_hostrecord_add hostrecord
593 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr "lan" && {
594 local hostname="$(uci_get system @system[0] hostname OpenWrt)"
595 dhcp_domain_add "" "$hostname" "$lanaddr"
599 config_foreach dhcp_srv_add srvhost
600 config_foreach dhcp_mx_add mxhost
603 config_get odhcpd_is_active odhcpd maindhcp
604 if [ "$odhcpd_is_active" != "1" ]; then
605 config_foreach dhcp_add dhcp
609 config_foreach dhcp_cname_add cname
612 rm -f /tmp/resolv.conf
613 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
614 echo "search $DOMAIN" >> /tmp/resolv.conf
616 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
617 for DNS_SERVER in $DNS_SERVERS ; do
618 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
623 rc_procd start_service "$@"
628 [ -f /tmp/resolv.conf ] && {
629 rm -f /tmp/resolv.conf
630 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
632 rm -f /var/run/dnsmasq.*.dhcp