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"
100 append_parm "$cfg" dhcpscript "--dhcp-script"
101 append_parm "$cfg" cachesize "--cache-size"
102 append_parm "$cfg" dnsforwardmax "--dns-forward-max"
103 append_parm "$cfg" port "--port"
104 append_parm "$cfg" ednspacket_max "--edns-packet-max"
105 append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
106 append_parm "$cfg" "queryport" "--query-port"
107 append_parm "$cfg" "domain" "--domain"
108 append_parm "$cfg" "local" "--server"
109 config_list_foreach "$cfg" "server" append_server
110 config_list_foreach "$cfg" "address" append_address
111 config_list_foreach "$cfg" "interface" append_interface
112 config_list_foreach "$cfg" "notinterface" append_notinterface
113 config_list_foreach "$cfg" "addnhosts" append_addnhosts
114 config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
115 append_parm "$cfg" "leasefile" "--dhcp-leasefile"
116 append_parm "$cfg" "resolvfile" "--resolv-file"
117 append_parm "$cfg" "tftp_root" "--tftp-root"
118 append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
119 append_parm "$cfg" "local_ttl" "--local-ttl"
121 config_get DOMAIN "$cfg" domain
123 config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
124 config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
126 config_get_bool readethers "$cfg" readethers
127 [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
129 config_get leasefile $cfg leasefile
130 [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
131 config_get_bool cachelocal "$cfg" cachelocal 1
133 config_get hostsfile "$cfg" dhcphostsfile
134 [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
137 config_get_bool rebind "$cfg" rebind_protection 1
138 [ $rebind -gt 0 ] && {
140 "DNS rebinding protection is active," \
141 "will discard upstream RFC1918 responses!"
142 xappend "--stop-dns-rebind"
144 local rebind_localhost
145 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
146 [ $rebind_localhost -gt 0 ] && {
147 logger -t dnsmasq "Allowing 127.0.0.0/8 responses"
148 xappend "--rebind-localhost-ok"
151 append_rebind_domain() {
152 logger -t dnsmasq "Allowing RFC1918 responses for domain $1"
153 xappend "--rebind-domain-ok=$1"
156 config_list_foreach "$cfg" rebind_domain append_rebind_domain
159 dhcp_option_add "$cfg" "" 0
164 dhcp_subscrid_add() {
167 config_get networkid "$cfg" networkid
168 [ -n "$networkid" ] || return 0
170 config_get subscriberid "$cfg" subscriberid
171 [ -n "$subscriberid" ] || return 0
173 xappend "--dhcp-subscrid=$networkid,$subscriberid"
175 config_get_bool force "$cfg" force 0
177 dhcp_option_add "$cfg" "$networkid" "$force"
180 dhcp_remoteid_add() {
183 config_get networkid "$cfg" networkid
184 [ -n "$networkid" ] || return 0
186 config_get remoteid "$cfg" remoteid
187 [ -n "$remoteid" ] || return 0
189 xappend "--dhcp-remoteid=$networkid,$remoteid"
191 config_get_bool force "$cfg" force 0
193 dhcp_option_add "$cfg" "$networkid" "$force"
196 dhcp_circuitid_add() {
199 config_get networkid "$cfg" networkid
200 [ -n "$networkid" ] || return 0
202 config_get circuitid "$cfg" circuitid
203 [ -n "$circuitid" ] || return 0
205 xappend "--dhcp-circuitid=$networkid,$circuitid"
207 config_get_bool force "$cfg" force 0
209 dhcp_option_add "$cfg" "$networkid" "$force"
212 dhcp_userclass_add() {
215 config_get networkid "$cfg" networkid
216 [ -n "$networkid" ] || return 0
218 config_get userclass "$cfg" userclass
219 [ -n "$userclass" ] || return 0
221 xappend "--dhcp-userclass=$networkid,$userclass"
223 config_get_bool force "$cfg" force 0
225 dhcp_option_add "$cfg" "$networkid" "$force"
228 dhcp_vendorclass_add() {
231 config_get networkid "$cfg" networkid
232 [ -n "$networkid" ] || return 0
234 config_get vendorclass "$cfg" vendorclass
235 [ -n "$vendorclass" ] || return 0
237 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
239 config_get_bool force "$cfg" force 0
241 dhcp_option_add "$cfg" "$networkid" "$force"
247 config_get_bool force "$cfg" force 0
249 config_get networkid "$cfg" networkid
250 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
252 config_get name "$cfg" name
253 config_get ip "$cfg" ip
254 [ -n "$ip" -o -n "$name" ] || return 0
257 config_get mac "$cfg" mac
258 for m in $mac; do append macs "$m" ","; done
259 [ -n "$macs" ] || return 0
261 config_get tag "$cfg" tag
263 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
271 [ -n "$tag" ] || return 0
273 config_get_bool force "$cfg" force 0
274 [ "$force" = "0" ] && force=
276 config_get option "$cfg" dhcp_option
278 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
285 config_get networkid "$cfg" networkid
286 [ -n "$networkid" ] || return 0
288 config_get mac "$cfg" mac
289 [ -n "$mac" ] || return 0
291 xappend "--dhcp-mac=$networkid,$mac"
293 dhcp_option_add "$cfg" "$networkid"
299 config_get networkid "$cfg" networkid
301 config_get filename "$cfg" filename
302 [ -n "$filename" ] || return 0
304 config_get servername "$cfg" servername
305 [ -n "$servername" ] || return 0
307 config_get serveraddress "$cfg" serveraddress
308 [ -n "$serveraddress" ] || return 0
310 xappend "--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress"
312 config_get_bool force "$cfg" force 0
314 dhcp_option_add "$cfg" "$networkid" "$force"
320 config_get net "$cfg" interface
321 [ -n "$net" ] || return 0
323 config_get networkid "$cfg" networkid
324 [ -n "$networkid" ] || networkid="$net"
326 config_get ifname "$net" ifname
327 [ -n "$ifname" ] || return 0
329 config_get dnsserver "$net" dns
330 [ "$cachelocal" = "0" -a -n "$dnsserver" ] && {
331 DNS_SERVERS="$DNS_SERVERS $dnsserver"
334 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
336 config_get proto "$net" proto
337 [ static = "$proto" ] || return 0
339 config_get ipaddr "$net" ipaddr
340 config_get netmask "$cfg" netmask
341 [ -n "$netmask" ] || config_get netmask "$net" netmask
343 #check for an already active dhcp server on the interface, unless 'force' is set
344 config_get_bool force "$cfg" force 0
345 [ $force -gt 0 ] || {
346 udhcpc -n -q -s /bin/true -t 1 -i $ifname >&- && {
348 "found already running DHCP-server on interface '$ifname'" \
349 "refusing to start, use 'option force 1' to override"
354 config_get start "$cfg" start
355 config_get limit "$cfg" limit
356 config_get leasetime "$cfg" leasetime
357 config_get options "$cfg" options
358 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
360 leasetime="${leasetime:-12h}"
361 start="$(dhcp_calc "${start:-100}")"
362 limit="${limit:-150}"
363 [ "$limit" -gt 0 ] && limit=$((limit-1))
364 eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
365 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
366 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
368 dhcp_option_add "$cfg" "$networkid"
376 [ "$force" = "0" ] && force=
378 config_get dhcp_option "$cfg" dhcp_option
379 for o in $dhcp_option; do
380 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
389 config_get names "$cfg" name "$2"
390 [ -n "$names" ] || return 0
392 config_get ip "$cfg" ip "$3"
393 [ -n "$ip" ] || return 0
395 local oIFS="$IFS"; IFS="."; set -- $ip; IFS="$oIFS"
396 local raddr="${4:+$4.$3.$2.$1.in-addr.arpa}"
398 for name in $names; do
401 [ "${fqdn%.*}" == "$fqdn" ] && \
402 fqdn="$fqdn${DOMAIN:+.$DOMAIN}"
404 xappend "--address=/$fqdn/$ip"
407 xappend "--ptr-record=$raddr,$fqdn"
416 config_get srv "$cfg" srv
417 [ -n "$srv" ] || return 0
419 config_get target "$cfg" target
420 [ -n "$target" ] || return 0
422 config_get port "$cfg" port
423 [ -n "$port" ] || return 0
425 config_get class "$cfg" class
426 config_get weight "$cfg" weight
428 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
430 xappend "--srv-host=$service"
435 local domain relay pref
437 config_get domain "$cfg" domain
438 [ -n "$domain" ] || return 0
440 config_get relay "$cfg" relay
441 [ -n "$relay" ] || return 0
443 config_get pref "$cfg" pref 0
445 local service="$domain,$relay,$pref"
447 xappend "--mx-host=$service"
454 config_get cname "$cfg" cname
455 [ -n "$cname" ] || return 0
457 config_get target "$cfg" target
458 [ -n "$target" ] || return 0
460 xappend "--cname=${cname},${target}"
468 config_get lanaddr "lan" ipaddr
472 # before we can call xappend
473 mkdir -p $(dirname $CONFIGFILE)
475 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
477 # if we did this last, we could override auto-generated config
478 [ -f /etc/dnsmasq.conf ] && {
479 xappend "--conf-file=/etc/dnsmasq.conf"
483 config_foreach dnsmasq dnsmasq
484 config_foreach dhcp_host_add host
486 config_foreach dhcp_boot_add boot
487 config_foreach dhcp_mac_add mac
488 config_foreach dhcp_tag_add tag
489 config_foreach dhcp_vendorclass_add vendorclass
490 config_foreach dhcp_userclass_add userclass
491 config_foreach dhcp_circuitid_add circuitid
492 config_foreach dhcp_remoteid_add remoteid
493 config_foreach dhcp_subscrid_add subscrid
494 config_foreach dhcp_domain_add domain
496 config_foreach dhcp_srv_add srvhost
497 config_foreach dhcp_mx_add mxhost
499 config_foreach dhcp_add dhcp
501 config_foreach dhcp_cname_add cname
505 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && [ -n "$lanaddr" ] && {
506 local hostname="$(uci_get system.@system[0].hostname)"
507 dhcp_domain_add "" "${hostname:-OpenWrt}" "$lanaddr"
510 service_start /usr/sbin/dnsmasq -C $CONFIGFILE && {
511 rm -f /tmp/resolv.conf
512 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
513 echo "search $DOMAIN" >> /tmp/resolv.conf
515 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
516 for DNS_SERVER in $DNS_SERVERS ; do
517 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
523 service_stop /usr/sbin/dnsmasq && {
524 [ -f /tmp/resolv.conf ] && {
525 rm -f /tmp/resolv.conf
526 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf