1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2007-2012 OpenWrt.org
14 CONFIGFILE="/var/etc/dnsmasq.conf"
19 echo "${value#--}" >> $CONFIGFILE
26 while [ -n "$ip" ]; do
29 res="$(($res + $part))"
30 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
40 config_get_bool _loctmp "$section" "$option" 0
41 [ $_loctmp -gt 0 ] && xappend "$value"
49 config_get _loctmp "$section" "$option"
50 [ -z "$_loctmp" ] && return 0
51 xappend "$switch=$_loctmp"
59 xappend "--address=$1"
63 local ifname=$(uci_get_state network "$1" ifname "$1")
64 xappend "--interface=$ifname"
67 append_notinterface() {
68 local ifname=$(uci_get_state network "$1" ifname "$1")
69 xappend "--except-interface=$ifname"
73 xappend "--addn-hosts=$1"
76 append_bogusnxdomain() {
77 xappend "--bogus-nxdomain=$1"
82 append_bool "$cfg" authoritative "--dhcp-authoritative"
83 append_bool "$cfg" nodaemon "--no-daemon"
84 append_bool "$cfg" domainneeded "--domain-needed"
85 append_bool "$cfg" filterwin2k "--filterwin2k"
86 append_bool "$cfg" nohosts "--no-hosts"
87 append_bool "$cfg" nonegcache "--no-negcache"
88 append_bool "$cfg" strictorder "--strict-order"
89 append_bool "$cfg" logqueries "--log-queries"
90 append_bool "$cfg" noresolv "--no-resolv"
91 append_bool "$cfg" localise_queries "--localise-queries"
92 append_bool "$cfg" readethers "--read-ethers"
93 append_bool "$cfg" dbus "--enable-dbus"
94 append_bool "$cfg" boguspriv "--bogus-priv"
95 append_bool "$cfg" expandhosts "--expand-hosts"
96 append_bool "$cfg" enable_tftp "--enable-tftp"
97 append_bool "$cfg" nonwildcard "--bind-interfaces"
98 append_bool "$cfg" fqdn "--dhcp-fqdn"
99 append_bool "$cfg" proxydnssec "--proxy-dnssec"
101 append_parm "$cfg" dhcpscript "--dhcp-script"
102 append_parm "$cfg" cachesize "--cache-size"
103 append_parm "$cfg" dnsforwardmax "--dns-forward-max"
104 append_parm "$cfg" port "--port"
105 append_parm "$cfg" ednspacket_max "--edns-packet-max"
106 append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
107 append_parm "$cfg" "queryport" "--query-port"
108 append_parm "$cfg" "domain" "--domain"
109 append_parm "$cfg" "local" "--server"
110 config_list_foreach "$cfg" "server" append_server
111 config_list_foreach "$cfg" "address" append_address
112 config_list_foreach "$cfg" "interface" append_interface
113 config_list_foreach "$cfg" "notinterface" append_notinterface
114 config_list_foreach "$cfg" "addnhosts" append_addnhosts
115 config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
116 append_parm "$cfg" "leasefile" "--dhcp-leasefile"
117 append_parm "$cfg" "resolvfile" "--resolv-file"
118 append_parm "$cfg" "tftp_root" "--tftp-root"
119 append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
120 append_parm "$cfg" "local_ttl" "--local-ttl"
122 config_get DOMAIN "$cfg" domain
124 config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
125 config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
127 config_get_bool readethers "$cfg" readethers
128 [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
130 config_get leasefile $cfg leasefile
131 [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
132 config_get_bool cachelocal "$cfg" cachelocal 1
134 config_get hostsfile "$cfg" dhcphostsfile
135 [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
138 xappend "--addn-hosts=/tmp/hosts"
141 config_get_bool rebind "$cfg" rebind_protection 1
142 [ $rebind -gt 0 ] && {
144 "DNS rebinding protection is active," \
145 "will discard upstream RFC1918 responses!"
146 xappend "--stop-dns-rebind"
148 local rebind_localhost
149 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
150 [ $rebind_localhost -gt 0 ] && {
151 logger -t dnsmasq "Allowing 127.0.0.0/8 responses"
152 xappend "--rebind-localhost-ok"
155 append_rebind_domain() {
156 logger -t dnsmasq "Allowing RFC1918 responses for domain $1"
157 xappend "--rebind-domain-ok=$1"
160 config_list_foreach "$cfg" rebind_domain append_rebind_domain
163 dhcp_option_add "$cfg" "" 0
168 dhcp_subscrid_add() {
171 config_get networkid "$cfg" networkid
172 [ -n "$networkid" ] || return 0
174 config_get subscriberid "$cfg" subscriberid
175 [ -n "$subscriberid" ] || return 0
177 xappend "--dhcp-subscrid=$networkid,$subscriberid"
179 config_get_bool force "$cfg" force 0
181 dhcp_option_add "$cfg" "$networkid" "$force"
184 dhcp_remoteid_add() {
187 config_get networkid "$cfg" networkid
188 [ -n "$networkid" ] || return 0
190 config_get remoteid "$cfg" remoteid
191 [ -n "$remoteid" ] || return 0
193 xappend "--dhcp-remoteid=$networkid,$remoteid"
195 config_get_bool force "$cfg" force 0
197 dhcp_option_add "$cfg" "$networkid" "$force"
200 dhcp_circuitid_add() {
203 config_get networkid "$cfg" networkid
204 [ -n "$networkid" ] || return 0
206 config_get circuitid "$cfg" circuitid
207 [ -n "$circuitid" ] || return 0
209 xappend "--dhcp-circuitid=$networkid,$circuitid"
211 config_get_bool force "$cfg" force 0
213 dhcp_option_add "$cfg" "$networkid" "$force"
216 dhcp_userclass_add() {
219 config_get networkid "$cfg" networkid
220 [ -n "$networkid" ] || return 0
222 config_get userclass "$cfg" userclass
223 [ -n "$userclass" ] || return 0
225 xappend "--dhcp-userclass=$networkid,$userclass"
227 config_get_bool force "$cfg" force 0
229 dhcp_option_add "$cfg" "$networkid" "$force"
232 dhcp_vendorclass_add() {
235 config_get networkid "$cfg" networkid
236 [ -n "$networkid" ] || return 0
238 config_get vendorclass "$cfg" vendorclass
239 [ -n "$vendorclass" ] || return 0
241 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
243 config_get_bool force "$cfg" force 0
245 dhcp_option_add "$cfg" "$networkid" "$force"
251 config_get_bool force "$cfg" force 0
253 config_get networkid "$cfg" networkid
254 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
256 config_get name "$cfg" name
257 config_get ip "$cfg" ip
258 [ -n "$ip" -o -n "$name" ] || return 0
260 config_get mac "$cfg" mac
262 [ -n "$name" ] || return 0
268 for m in $mac; do append macs "$m" ","; done
270 config_get tag "$cfg" tag
272 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
280 [ -n "$tag" ] || return 0
282 config_get_bool force "$cfg" force 0
283 [ "$force" = "0" ] && force=
285 config_get option "$cfg" dhcp_option
287 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
294 config_get networkid "$cfg" networkid
295 [ -n "$networkid" ] || return 0
297 config_get mac "$cfg" mac
298 [ -n "$mac" ] || return 0
300 xappend "--dhcp-mac=$networkid,$mac"
302 dhcp_option_add "$cfg" "$networkid"
308 config_get networkid "$cfg" networkid
310 config_get filename "$cfg" filename
311 [ -n "$filename" ] || return 0
313 config_get servername "$cfg" servername
314 [ -n "$servername" ] || return 0
316 config_get serveraddress "$cfg" serveraddress
317 [ -n "$serveraddress" ] || return 0
319 xappend "--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress"
321 config_get_bool force "$cfg" force 0
323 dhcp_option_add "$cfg" "$networkid" "$force"
329 config_get net "$cfg" interface
330 [ -n "$net" ] || return 0
332 config_get networkid "$cfg" networkid
333 [ -n "$networkid" ] || networkid="$net"
335 config_get ifname "$net" ifname
336 [ -n "$ifname" ] || return 0
338 config_get dnsserver "$net" dns
339 [ "$cachelocal" = "0" -a -n "$dnsserver" ] && {
340 DNS_SERVERS="$DNS_SERVERS $dnsserver"
343 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
345 config_get proto "$net" proto
346 [ static = "$proto" ] || return 0
348 config_get ipaddr "$net" ipaddr
349 config_get netmask "$cfg" netmask
350 [ -n "$netmask" ] || config_get netmask "$net" netmask
352 #check for an already active dhcp server on the interface, unless 'force' is set
353 config_get_bool force "$cfg" force 0
354 [ $force -gt 0 ] || {
355 udhcpc -n -q -s /bin/true -t 1 -i $ifname >&- && {
357 "found already running DHCP-server on interface '$ifname'" \
358 "refusing to start, use 'option force 1' to override"
363 config_get start "$cfg" start
364 config_get limit "$cfg" limit
365 config_get leasetime "$cfg" leasetime
366 config_get options "$cfg" options
367 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
369 leasetime="${leasetime:-12h}"
370 start="$(dhcp_calc "${start:-100}")"
371 limit="${limit:-150}"
372 [ "$limit" -gt 0 ] && limit=$((limit-1))
373 eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
374 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
375 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
377 dhcp_option_add "$cfg" "$networkid"
385 [ "$force" = "0" ] && force=
387 config_get dhcp_option "$cfg" dhcp_option
388 for o in $dhcp_option; do
389 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
396 local ip name names record
398 config_get names "$cfg" name "$2"
399 [ -n "$names" ] || return 0
401 config_get ip "$cfg" ip "$3"
402 [ -n "$ip" ] || return 0
404 for name in $names; do
405 record="${record:+$record/}$name"
408 xappend "--address=/$record/$ip"
414 config_get srv "$cfg" srv
415 [ -n "$srv" ] || return 0
417 config_get target "$cfg" target
418 [ -n "$target" ] || return 0
420 config_get port "$cfg" port
421 [ -n "$port" ] || return 0
423 config_get class "$cfg" class
424 config_get weight "$cfg" weight
426 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
428 xappend "--srv-host=$service"
433 local domain relay pref
435 config_get domain "$cfg" domain
436 [ -n "$domain" ] || return 0
438 config_get relay "$cfg" relay
439 [ -n "$relay" ] || return 0
441 config_get pref "$cfg" pref 0
443 local service="$domain,$relay,$pref"
445 xappend "--mx-host=$service"
452 config_get cname "$cfg" cname
453 [ -n "$cname" ] || return 0
455 config_get target "$cfg" target
456 [ -n "$target" ] || return 0
458 xappend "--cname=${cname},${target}"
461 dhcp_hostrecord_add() {
463 local names addresses record val
465 config_get names "$cfg" name "$2"
466 if [ -z "$names" ]; then
470 config_get addresses "$cfg" ip "$3"
471 if [ -z "$addresses" ]; then
475 for val in $names $addresses; do
476 record="${record:+$record,}$val"
479 xappend "--host-record=$record"
487 config_get lanaddr "lan" ipaddr
491 # before we can call xappend
492 mkdir -p $(dirname $CONFIGFILE)
494 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
496 # if we did this last, we could override auto-generated config
497 [ -f /etc/dnsmasq.conf ] && {
498 xappend "--conf-file=/etc/dnsmasq.conf"
502 config_foreach dnsmasq dnsmasq
503 config_foreach dhcp_host_add host
505 config_foreach dhcp_boot_add boot
506 config_foreach dhcp_mac_add mac
507 config_foreach dhcp_tag_add tag
508 config_foreach dhcp_vendorclass_add vendorclass
509 config_foreach dhcp_userclass_add userclass
510 config_foreach dhcp_circuitid_add circuitid
511 config_foreach dhcp_remoteid_add remoteid
512 config_foreach dhcp_subscrid_add subscrid
513 config_foreach dhcp_domain_add domain
514 config_foreach dhcp_hostrecord_add hostrecord
517 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && [ -n "$lanaddr" ] && {
518 local hostname="$(uci_get system @system[0] hostname OpenWrt)"
519 dhcp_hostrecord_add "" "$hostname${DOMAIN:+.$DOMAIN $hostname}" "$lanaddr"
523 config_foreach dhcp_srv_add srvhost
524 config_foreach dhcp_mx_add mxhost
526 config_foreach dhcp_add dhcp
528 config_foreach dhcp_cname_add cname
531 service_start /usr/sbin/dnsmasq -C $CONFIGFILE && {
532 rm -f /tmp/resolv.conf
533 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
534 echo "search $DOMAIN" >> /tmp/resolv.conf
536 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
537 for DNS_SERVER in $DNS_SERVERS ; do
538 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
544 service_stop /usr/sbin/dnsmasq && {
545 [ -f /tmp/resolv.conf ] && {
546 rm -f /tmp/resolv.conf
547 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf