1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2007-2012 OpenWrt.org
15 CONFIGFILE="/var/etc/dnsmasq.conf"
16 HOSTFILE="/tmp/hosts/dhcp"
21 echo "${value#--}" >> $CONFIGFILE
28 while [ -n "$ip" ]; do
31 res="$(($res + $part))"
32 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
39 local stamp="/var/run/dnsmasq.$ifname.dhcp"
42 [ -s "$stamp" ] && return $(cat "$stamp")
44 udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
48 "found already running DHCP-server on interface '$ifname'" \
49 "refusing to start, use 'option force 1' to override"
56 pidof dnsmasq >/dev/null || \
57 logger -t dnsmasq "$@"
65 config_get_bool _loctmp "$section" "$option" 0
66 [ $_loctmp -gt 0 ] && xappend "$value"
74 config_get _loctmp "$section" "$option"
75 [ -z "$_loctmp" ] && return 0
76 xappend "$switch=$_loctmp"
84 xappend "--address=$1"
88 local ifname=$(uci_get_state network "$1" ifname "$1")
89 xappend "--interface=$ifname"
92 append_notinterface() {
93 local ifname=$(uci_get_state network "$1" ifname "$1")
94 xappend "--except-interface=$ifname"
98 xappend "--addn-hosts=$1"
101 append_bogusnxdomain() {
102 xappend "--bogus-nxdomain=$1"
107 append_bool "$cfg" authoritative "--dhcp-authoritative"
108 append_bool "$cfg" nodaemon "--no-daemon"
109 append_bool "$cfg" domainneeded "--domain-needed"
110 append_bool "$cfg" filterwin2k "--filterwin2k"
111 append_bool "$cfg" nohosts "--no-hosts"
112 append_bool "$cfg" nonegcache "--no-negcache"
113 append_bool "$cfg" strictorder "--strict-order"
114 append_bool "$cfg" logqueries "--log-queries"
115 append_bool "$cfg" noresolv "--no-resolv"
116 append_bool "$cfg" localise_queries "--localise-queries"
117 append_bool "$cfg" readethers "--read-ethers"
118 append_bool "$cfg" dbus "--enable-dbus"
119 append_bool "$cfg" boguspriv "--bogus-priv"
120 append_bool "$cfg" expandhosts "--expand-hosts"
121 append_bool "$cfg" enable_tftp "--enable-tftp"
122 append_bool "$cfg" nonwildcard "--bind-interfaces"
123 append_bool "$cfg" fqdn "--dhcp-fqdn"
124 append_bool "$cfg" proxydnssec "--proxy-dnssec"
126 append_parm "$cfg" dhcpscript "--dhcp-script"
127 append_parm "$cfg" cachesize "--cache-size"
128 append_parm "$cfg" dnsforwardmax "--dns-forward-max"
129 append_parm "$cfg" port "--port"
130 append_parm "$cfg" ednspacket_max "--edns-packet-max"
131 append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
132 append_parm "$cfg" "queryport" "--query-port"
133 append_parm "$cfg" "domain" "--domain"
134 append_parm "$cfg" "local" "--server"
135 config_list_foreach "$cfg" "server" append_server
136 config_list_foreach "$cfg" "address" append_address
137 config_list_foreach "$cfg" "interface" append_interface
138 config_list_foreach "$cfg" "notinterface" append_notinterface
139 config_list_foreach "$cfg" "addnhosts" append_addnhosts
140 config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
141 append_parm "$cfg" "leasefile" "--dhcp-leasefile"
142 append_parm "$cfg" "resolvfile" "--resolv-file"
143 append_parm "$cfg" "tftp_root" "--tftp-root"
144 append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
145 append_parm "$cfg" "local_ttl" "--local-ttl"
147 config_get DOMAIN "$cfg" domain
149 config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
150 config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
152 config_get_bool readethers "$cfg" readethers
153 [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
155 config_get leasefile $cfg leasefile
156 [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
157 config_get_bool cachelocal "$cfg" cachelocal 1
159 config_get hostsfile "$cfg" dhcphostsfile
160 [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
162 mkdir -p /tmp/hosts /tmp/dnsmasq.d
163 xappend "--addn-hosts=/tmp/hosts"
164 xappend "--conf-dir=/tmp/dnsmasq.d"
167 config_get_bool rebind "$cfg" rebind_protection 1
168 [ $rebind -gt 0 ] && {
170 "DNS rebinding protection is active," \
171 "will discard upstream RFC1918 responses!"
172 xappend "--stop-dns-rebind"
174 local rebind_localhost
175 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
176 [ $rebind_localhost -gt 0 ] && {
177 log_once "Allowing 127.0.0.0/8 responses"
178 xappend "--rebind-localhost-ok"
181 append_rebind_domain() {
182 log_once "Allowing RFC1918 responses for domain $1"
183 xappend "--rebind-domain-ok=$1"
186 config_list_foreach "$cfg" rebind_domain append_rebind_domain
189 dhcp_option_add "$cfg" "" 0
191 xappend "--dhcp-broadcast=tag:needs-broadcast"
196 dhcp_subscrid_add() {
199 config_get networkid "$cfg" networkid
200 [ -n "$networkid" ] || return 0
202 config_get subscriberid "$cfg" subscriberid
203 [ -n "$subscriberid" ] || return 0
205 xappend "--dhcp-subscrid=$networkid,$subscriberid"
207 config_get_bool force "$cfg" force 0
209 dhcp_option_add "$cfg" "$networkid" "$force"
212 dhcp_remoteid_add() {
215 config_get networkid "$cfg" networkid
216 [ -n "$networkid" ] || return 0
218 config_get remoteid "$cfg" remoteid
219 [ -n "$remoteid" ] || return 0
221 xappend "--dhcp-remoteid=$networkid,$remoteid"
223 config_get_bool force "$cfg" force 0
225 dhcp_option_add "$cfg" "$networkid" "$force"
228 dhcp_circuitid_add() {
231 config_get networkid "$cfg" networkid
232 [ -n "$networkid" ] || return 0
234 config_get circuitid "$cfg" circuitid
235 [ -n "$circuitid" ] || return 0
237 xappend "--dhcp-circuitid=$networkid,$circuitid"
239 config_get_bool force "$cfg" force 0
241 dhcp_option_add "$cfg" "$networkid" "$force"
244 dhcp_userclass_add() {
247 config_get networkid "$cfg" networkid
248 [ -n "$networkid" ] || return 0
250 config_get userclass "$cfg" userclass
251 [ -n "$userclass" ] || return 0
253 xappend "--dhcp-userclass=$networkid,$userclass"
255 config_get_bool force "$cfg" force 0
257 dhcp_option_add "$cfg" "$networkid" "$force"
260 dhcp_vendorclass_add() {
263 config_get networkid "$cfg" networkid
264 [ -n "$networkid" ] || return 0
266 config_get vendorclass "$cfg" vendorclass
267 [ -n "$vendorclass" ] || return 0
269 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
271 config_get_bool force "$cfg" force 0
273 dhcp_option_add "$cfg" "$networkid" "$force"
279 config_get_bool force "$cfg" force 0
281 config_get networkid "$cfg" networkid
282 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
284 config_get name "$cfg" name
285 config_get ip "$cfg" ip
286 [ -n "$ip" -o -n "$name" ] || return 0
288 config_get mac "$cfg" mac
290 [ -n "$name" ] || return 0
296 for m in $mac; do append macs "$m" ","; done
298 config_get tag "$cfg" tag
300 config_get_bool broadcast "$cfg" broadcast 0
301 [ "$broadcast" = "0" ] && broadcast=
303 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
305 config_get_bool dns "$cfg" dns 0
306 [ "$dns" = "1" ] && {
307 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
316 [ -n "$tag" ] || return 0
318 config_get_bool force "$cfg" force 0
319 [ "$force" = "0" ] && force=
321 config_get option "$cfg" dhcp_option
323 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
330 config_get networkid "$cfg" networkid
331 [ -n "$networkid" ] || return 0
333 config_get mac "$cfg" mac
334 [ -n "$mac" ] || return 0
336 xappend "--dhcp-mac=$networkid,$mac"
338 dhcp_option_add "$cfg" "$networkid"
344 config_get networkid "$cfg" networkid
346 config_get filename "$cfg" filename
347 [ -n "$filename" ] || return 0
349 config_get servername "$cfg" servername
350 [ -n "$servername" ] || return 0
352 config_get serveraddress "$cfg" serveraddress
353 [ -n "$serveraddress" ] || return 0
355 xappend "--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress"
357 config_get_bool force "$cfg" force 0
359 dhcp_option_add "$cfg" "$networkid" "$force"
365 config_get net "$cfg" interface
366 [ -n "$net" ] || return 0
368 config_get networkid "$cfg" networkid
369 [ -n "$networkid" ] || networkid="$net"
371 network_get_subnet subnet "$net" || return 0
372 network_get_device ifname "$net" || return 0
373 network_get_protocol proto "$net" || return 0
375 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
376 DNS_SERVERS="$DNS_SERVERS $dnsserver"
379 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
381 # Do not support non-static interfaces for now
382 [ static = "$proto" ] || return 0
384 # Override interface netmask with dhcp config if applicable
385 config_get netmask "$cfg" netmask "${subnet##*/}"
387 #check for an already active dhcp server on the interface, unless 'force' is set
388 config_get_bool force "$cfg" force 0
389 [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
391 config_get start "$cfg" start
392 config_get limit "$cfg" limit
393 config_get leasetime "$cfg" leasetime
394 config_get options "$cfg" options
395 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
397 leasetime="${leasetime:-12h}"
398 start="$(dhcp_calc "${start:-100}")"
399 limit="${limit:-150}"
400 [ "$limit" -gt 0 ] && limit=$((limit-1))
401 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
402 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
403 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
405 dhcp_option_add "$cfg" "$networkid"
413 [ "$force" = "0" ] && force=
415 config_get dhcp_option "$cfg" dhcp_option
416 for o in $dhcp_option; do
417 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
424 local ip name names record
426 config_get names "$cfg" name "$2"
427 [ -n "$names" ] || return 0
429 config_get ip "$cfg" ip "$3"
430 [ -n "$ip" ] || return 0
432 for name in $names; do
433 [ "${name%.*}" == "$name" ] && \
434 name="$name${DOMAIN:+.$DOMAIN}"
436 record="${record:+$record/}$name"
439 xappend "--address=/$record/$ip"
445 config_get srv "$cfg" srv
446 [ -n "$srv" ] || return 0
448 config_get target "$cfg" target
449 [ -n "$target" ] || return 0
451 config_get port "$cfg" port
452 [ -n "$port" ] || return 0
454 config_get class "$cfg" class
455 config_get weight "$cfg" weight
457 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
459 xappend "--srv-host=$service"
464 local domain relay pref
466 config_get domain "$cfg" domain
467 [ -n "$domain" ] || return 0
469 config_get relay "$cfg" relay
470 [ -n "$relay" ] || return 0
472 config_get pref "$cfg" pref 0
474 local service="$domain,$relay,$pref"
476 xappend "--mx-host=$service"
483 config_get cname "$cfg" cname
484 [ -n "$cname" ] || return 0
486 config_get target "$cfg" target
487 [ -n "$target" ] || return 0
489 xappend "--cname=${cname},${target}"
492 dhcp_hostrecord_add() {
494 local names addresses record val
496 config_get names "$cfg" name "$2"
497 if [ -z "$names" ]; then
501 config_get addresses "$cfg" ip "$3"
502 if [ -z "$addresses" ]; then
506 for val in $names $addresses; do
507 record="${record:+$record,}$val"
510 xappend "--host-record=$record"
515 procd_add_reload_trigger "dhcp"
519 # Will be launched through hotplug
524 include /lib/functions
529 procd_set_param command $PROG -C $CONFIGFILE -k
530 procd_set_param file $CONFIGFILE
533 # before we can call xappend
534 mkdir -p $(dirname $CONFIGFILE)
536 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
537 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
539 # if we did this last, we could override auto-generated config
540 [ -f /etc/dnsmasq.conf ] && {
541 xappend "--conf-file=/etc/dnsmasq.conf"
545 config_foreach dnsmasq dnsmasq
546 config_foreach dhcp_host_add host
548 config_foreach dhcp_boot_add boot
549 config_foreach dhcp_mac_add mac
550 config_foreach dhcp_tag_add tag
551 config_foreach dhcp_vendorclass_add vendorclass
552 config_foreach dhcp_userclass_add userclass
553 config_foreach dhcp_circuitid_add circuitid
554 config_foreach dhcp_remoteid_add remoteid
555 config_foreach dhcp_subscrid_add subscrid
556 config_foreach dhcp_domain_add domain
557 config_foreach dhcp_hostrecord_add hostrecord
561 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr "lan" && {
562 local hostname="$(uci_get system @system[0] hostname OpenWrt)"
563 dhcp_hostrecord_add "" "${hostname%.$DOMAIN}${DOMAIN:+.$DOMAIN ${hostname%.$DOMAIN}}" "$lanaddr"
567 config_foreach dhcp_srv_add srvhost
568 config_foreach dhcp_mx_add mxhost
571 config_get odhcpd_is_active odhcpd maindhcp
572 if [ "$odhcpd_is_active" != "1" ]; then
573 config_foreach dhcp_add dhcp
577 config_foreach dhcp_cname_add cname
580 rm -f /tmp/resolv.conf
581 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
582 echo "search $DOMAIN" >> /tmp/resolv.conf
584 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
585 for DNS_SERVER in $DNS_SERVERS ; do
586 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
591 rc_procd start_service "$@"
596 [ -f /tmp/resolv.conf ] && {
597 rm -f /tmp/resolv.conf
598 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
600 rm -f /var/run/dnsmasq.*.dhcp