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"
161 mkdir -p /tmp/hosts /tmp/dnsmasq.d
162 xappend "--addn-hosts=/tmp/hosts"
163 xappend "--conf-dir=/tmp/dnsmasq.d"
166 config_get_bool rebind "$cfg" rebind_protection 1
167 [ $rebind -gt 0 ] && {
169 "DNS rebinding protection is active," \
170 "will discard upstream RFC1918 responses!"
171 xappend "--stop-dns-rebind"
173 local rebind_localhost
174 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
175 [ $rebind_localhost -gt 0 ] && {
176 log_once "Allowing 127.0.0.0/8 responses"
177 xappend "--rebind-localhost-ok"
180 append_rebind_domain() {
181 log_once "Allowing RFC1918 responses for domain $1"
182 xappend "--rebind-domain-ok=$1"
185 config_list_foreach "$cfg" rebind_domain append_rebind_domain
188 dhcp_option_add "$cfg" "" 0
190 xappend "--dhcp-broadcast=tag:needs-broadcast"
195 dhcp_subscrid_add() {
198 config_get networkid "$cfg" networkid
199 [ -n "$networkid" ] || return 0
201 config_get subscriberid "$cfg" subscriberid
202 [ -n "$subscriberid" ] || return 0
204 xappend "--dhcp-subscrid=$networkid,$subscriberid"
206 config_get_bool force "$cfg" force 0
208 dhcp_option_add "$cfg" "$networkid" "$force"
211 dhcp_remoteid_add() {
214 config_get networkid "$cfg" networkid
215 [ -n "$networkid" ] || return 0
217 config_get remoteid "$cfg" remoteid
218 [ -n "$remoteid" ] || return 0
220 xappend "--dhcp-remoteid=$networkid,$remoteid"
222 config_get_bool force "$cfg" force 0
224 dhcp_option_add "$cfg" "$networkid" "$force"
227 dhcp_circuitid_add() {
230 config_get networkid "$cfg" networkid
231 [ -n "$networkid" ] || return 0
233 config_get circuitid "$cfg" circuitid
234 [ -n "$circuitid" ] || return 0
236 xappend "--dhcp-circuitid=$networkid,$circuitid"
238 config_get_bool force "$cfg" force 0
240 dhcp_option_add "$cfg" "$networkid" "$force"
243 dhcp_userclass_add() {
246 config_get networkid "$cfg" networkid
247 [ -n "$networkid" ] || return 0
249 config_get userclass "$cfg" userclass
250 [ -n "$userclass" ] || return 0
252 xappend "--dhcp-userclass=$networkid,$userclass"
254 config_get_bool force "$cfg" force 0
256 dhcp_option_add "$cfg" "$networkid" "$force"
259 dhcp_vendorclass_add() {
262 config_get networkid "$cfg" networkid
263 [ -n "$networkid" ] || return 0
265 config_get vendorclass "$cfg" vendorclass
266 [ -n "$vendorclass" ] || return 0
268 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
270 config_get_bool force "$cfg" force 0
272 dhcp_option_add "$cfg" "$networkid" "$force"
278 config_get_bool force "$cfg" force 0
280 config_get networkid "$cfg" networkid
281 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
283 config_get name "$cfg" name
284 config_get ip "$cfg" ip
285 [ -n "$ip" -o -n "$name" ] || return 0
287 config_get mac "$cfg" mac
289 [ -n "$name" ] || return 0
295 for m in $mac; do append macs "$m" ","; done
297 config_get tag "$cfg" tag
299 config_get_bool broadcast "$cfg" broadcast 0
300 [ "$broadcast" = "0" ] && broadcast=
302 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
310 [ -n "$tag" ] || return 0
312 config_get_bool force "$cfg" force 0
313 [ "$force" = "0" ] && force=
315 config_get option "$cfg" dhcp_option
317 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
324 config_get networkid "$cfg" networkid
325 [ -n "$networkid" ] || return 0
327 config_get mac "$cfg" mac
328 [ -n "$mac" ] || return 0
330 xappend "--dhcp-mac=$networkid,$mac"
332 dhcp_option_add "$cfg" "$networkid"
338 config_get networkid "$cfg" networkid
340 config_get filename "$cfg" filename
341 [ -n "$filename" ] || return 0
343 config_get servername "$cfg" servername
344 [ -n "$servername" ] || return 0
346 config_get serveraddress "$cfg" serveraddress
347 [ -n "$serveraddress" ] || return 0
349 xappend "--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress"
351 config_get_bool force "$cfg" force 0
353 dhcp_option_add "$cfg" "$networkid" "$force"
359 config_get net "$cfg" interface
360 [ -n "$net" ] || return 0
362 config_get networkid "$cfg" networkid
363 [ -n "$networkid" ] || networkid="$net"
365 network_get_subnet subnet "$net" || return 0
366 network_get_device ifname "$net" || return 0
367 network_get_protocol proto "$net" || return 0
369 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
370 DNS_SERVERS="$DNS_SERVERS $dnsserver"
373 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
375 # Do not support non-static interfaces for now
376 [ static = "$proto" ] || return 0
378 # Override interface netmask with dhcp config if applicable
379 config_get netmask "$cfg" netmask "${subnet##*/}"
381 #check for an already active dhcp server on the interface, unless 'force' is set
382 config_get_bool force "$cfg" force 0
383 [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
385 config_get start "$cfg" start
386 config_get limit "$cfg" limit
387 config_get leasetime "$cfg" leasetime
388 config_get options "$cfg" options
389 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
391 leasetime="${leasetime:-12h}"
392 start="$(dhcp_calc "${start:-100}")"
393 limit="${limit:-150}"
394 [ "$limit" -gt 0 ] && limit=$((limit-1))
395 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
396 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
397 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
399 dhcp_option_add "$cfg" "$networkid"
407 [ "$force" = "0" ] && force=
409 config_get dhcp_option "$cfg" dhcp_option
410 for o in $dhcp_option; do
411 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
418 local ip name names record
420 config_get names "$cfg" name "$2"
421 [ -n "$names" ] || return 0
423 config_get ip "$cfg" ip "$3"
424 [ -n "$ip" ] || return 0
426 for name in $names; do
427 [ "${name%.*}" == "$name" ] && \
428 name="$name${DOMAIN:+.$DOMAIN}"
430 record="${record:+$record/}$name"
433 xappend "--address=/$record/$ip"
439 config_get srv "$cfg" srv
440 [ -n "$srv" ] || return 0
442 config_get target "$cfg" target
443 [ -n "$target" ] || return 0
445 config_get port "$cfg" port
446 [ -n "$port" ] || return 0
448 config_get class "$cfg" class
449 config_get weight "$cfg" weight
451 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
453 xappend "--srv-host=$service"
458 local domain relay pref
460 config_get domain "$cfg" domain
461 [ -n "$domain" ] || return 0
463 config_get relay "$cfg" relay
464 [ -n "$relay" ] || return 0
466 config_get pref "$cfg" pref 0
468 local service="$domain,$relay,$pref"
470 xappend "--mx-host=$service"
477 config_get cname "$cfg" cname
478 [ -n "$cname" ] || return 0
480 config_get target "$cfg" target
481 [ -n "$target" ] || return 0
483 xappend "--cname=${cname},${target}"
486 dhcp_hostrecord_add() {
488 local names addresses record val
490 config_get names "$cfg" name "$2"
491 if [ -z "$names" ]; then
495 config_get addresses "$cfg" ip "$3"
496 if [ -z "$addresses" ]; then
500 for val in $names $addresses; do
501 record="${record:+$record,}$val"
504 xappend "--host-record=$record"
509 procd_add_reload_trigger "dhcp"
513 # Will be launched through hotplug
518 include /lib/functions
523 procd_set_param command $PROG -C $CONFIGFILE -k
524 procd_set_param file $CONFIGFILE
527 # before we can call xappend
528 mkdir -p $(dirname $CONFIGFILE)
530 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
532 # if we did this last, we could override auto-generated config
533 [ -f /etc/dnsmasq.conf ] && {
534 xappend "--conf-file=/etc/dnsmasq.conf"
538 config_foreach dnsmasq dnsmasq
539 config_foreach dhcp_host_add host
541 config_foreach dhcp_boot_add boot
542 config_foreach dhcp_mac_add mac
543 config_foreach dhcp_tag_add tag
544 config_foreach dhcp_vendorclass_add vendorclass
545 config_foreach dhcp_userclass_add userclass
546 config_foreach dhcp_circuitid_add circuitid
547 config_foreach dhcp_remoteid_add remoteid
548 config_foreach dhcp_subscrid_add subscrid
549 config_foreach dhcp_domain_add domain
550 config_foreach dhcp_hostrecord_add hostrecord
554 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr "lan" && {
555 local hostname="$(uci_get system @system[0] hostname OpenWrt)"
556 dhcp_hostrecord_add "" "${hostname%.$DOMAIN}${DOMAIN:+.$DOMAIN ${hostname%.$DOMAIN}}" "$lanaddr"
560 config_foreach dhcp_srv_add srvhost
561 config_foreach dhcp_mx_add mxhost
564 config_get odhcpd_is_active odhcpd maindhcp
565 if [ "$odhcpd_is_active" != "1" ]; then
566 config_foreach dhcp_add dhcp
570 config_foreach dhcp_cname_add cname
573 rm -f /tmp/resolv.conf
574 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
575 echo "search $DOMAIN" >> /tmp/resolv.conf
577 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
578 for DNS_SERVER in $DNS_SERVERS ; do
579 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
584 rc_procd start_service "$@"
589 [ -f /tmp/resolv.conf ] && {
590 rm -f /tmp/resolv.conf
591 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
593 rm -f /var/run/dnsmasq.*.dhcp