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 config_get_bool rebind "$cfg" rebind_protection 1
139 [ $rebind -gt 0 ] && {
141 "DNS rebinding protection is active," \
142 "will discard upstream RFC1918 responses!"
143 xappend "--stop-dns-rebind"
145 local rebind_localhost
146 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
147 [ $rebind_localhost -gt 0 ] && {
148 logger -t dnsmasq "Allowing 127.0.0.0/8 responses"
149 xappend "--rebind-localhost-ok"
152 append_rebind_domain() {
153 logger -t dnsmasq "Allowing RFC1918 responses for domain $1"
154 xappend "--rebind-domain-ok=$1"
157 config_list_foreach "$cfg" rebind_domain append_rebind_domain
160 dhcp_option_add "$cfg" "" 0
165 dhcp_subscrid_add() {
168 config_get networkid "$cfg" networkid
169 [ -n "$networkid" ] || return 0
171 config_get subscriberid "$cfg" subscriberid
172 [ -n "$subscriberid" ] || return 0
174 xappend "--dhcp-subscrid=$networkid,$subscriberid"
176 config_get_bool force "$cfg" force 0
178 dhcp_option_add "$cfg" "$networkid" "$force"
181 dhcp_remoteid_add() {
184 config_get networkid "$cfg" networkid
185 [ -n "$networkid" ] || return 0
187 config_get remoteid "$cfg" remoteid
188 [ -n "$remoteid" ] || return 0
190 xappend "--dhcp-remoteid=$networkid,$remoteid"
192 config_get_bool force "$cfg" force 0
194 dhcp_option_add "$cfg" "$networkid" "$force"
197 dhcp_circuitid_add() {
200 config_get networkid "$cfg" networkid
201 [ -n "$networkid" ] || return 0
203 config_get circuitid "$cfg" circuitid
204 [ -n "$circuitid" ] || return 0
206 xappend "--dhcp-circuitid=$networkid,$circuitid"
208 config_get_bool force "$cfg" force 0
210 dhcp_option_add "$cfg" "$networkid" "$force"
213 dhcp_userclass_add() {
216 config_get networkid "$cfg" networkid
217 [ -n "$networkid" ] || return 0
219 config_get userclass "$cfg" userclass
220 [ -n "$userclass" ] || return 0
222 xappend "--dhcp-userclass=$networkid,$userclass"
224 config_get_bool force "$cfg" force 0
226 dhcp_option_add "$cfg" "$networkid" "$force"
229 dhcp_vendorclass_add() {
232 config_get networkid "$cfg" networkid
233 [ -n "$networkid" ] || return 0
235 config_get vendorclass "$cfg" vendorclass
236 [ -n "$vendorclass" ] || return 0
238 xappend "--dhcp-vendorclass=$networkid,$vendorclass"
240 config_get_bool force "$cfg" force 0
242 dhcp_option_add "$cfg" "$networkid" "$force"
248 config_get_bool force "$cfg" force 0
250 config_get networkid "$cfg" networkid
251 [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
253 config_get name "$cfg" name
254 config_get ip "$cfg" ip
255 [ -n "$ip" -o -n "$name" ] || return 0
257 config_get mac "$cfg" mac
259 [ -n "$name" ] || return 0
265 for m in $mac; do append macs "$m" ","; done
267 config_get tag "$cfg" tag
269 xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
277 [ -n "$tag" ] || return 0
279 config_get_bool force "$cfg" force 0
280 [ "$force" = "0" ] && force=
282 config_get option "$cfg" dhcp_option
284 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
291 config_get networkid "$cfg" networkid
292 [ -n "$networkid" ] || return 0
294 config_get mac "$cfg" mac
295 [ -n "$mac" ] || return 0
297 xappend "--dhcp-mac=$networkid,$mac"
299 dhcp_option_add "$cfg" "$networkid"
305 config_get networkid "$cfg" networkid
307 config_get filename "$cfg" filename
308 [ -n "$filename" ] || return 0
310 config_get servername "$cfg" servername
311 [ -n "$servername" ] || return 0
313 config_get serveraddress "$cfg" serveraddress
314 [ -n "$serveraddress" ] || return 0
316 xappend "--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress"
318 config_get_bool force "$cfg" force 0
320 dhcp_option_add "$cfg" "$networkid" "$force"
326 config_get net "$cfg" interface
327 [ -n "$net" ] || return 0
329 config_get networkid "$cfg" networkid
330 [ -n "$networkid" ] || networkid="$net"
332 config_get ifname "$net" ifname
333 [ -n "$ifname" ] || return 0
335 config_get dnsserver "$net" dns
336 [ "$cachelocal" = "0" -a -n "$dnsserver" ] && {
337 DNS_SERVERS="$DNS_SERVERS $dnsserver"
340 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
342 config_get proto "$net" proto
343 [ static = "$proto" ] || return 0
345 config_get ipaddr "$net" ipaddr
346 config_get netmask "$cfg" netmask
347 [ -n "$netmask" ] || config_get netmask "$net" netmask
349 #check for an already active dhcp server on the interface, unless 'force' is set
350 config_get_bool force "$cfg" force 0
351 [ $force -gt 0 ] || {
352 udhcpc -n -q -s /bin/true -t 1 -i $ifname >&- && {
354 "found already running DHCP-server on interface '$ifname'" \
355 "refusing to start, use 'option force 1' to override"
360 config_get start "$cfg" start
361 config_get limit "$cfg" limit
362 config_get leasetime "$cfg" leasetime
363 config_get options "$cfg" options
364 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
366 leasetime="${leasetime:-12h}"
367 start="$(dhcp_calc "${start:-100}")"
368 limit="${limit:-150}"
369 [ "$limit" -gt 0 ] && limit=$((limit-1))
370 eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
371 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
372 xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
374 dhcp_option_add "$cfg" "$networkid"
382 [ "$force" = "0" ] && force=
384 config_get dhcp_option "$cfg" dhcp_option
385 for o in $dhcp_option; do
386 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
395 config_get names "$cfg" name "$2"
396 [ -n "$names" ] || return 0
398 config_get ip "$cfg" ip "$3"
399 [ -n "$ip" ] || return 0
401 local oIFS="$IFS"; IFS="."; set -- $ip; IFS="$oIFS"
402 local raddr="${4:+$4.$3.$2.$1.in-addr.arpa}"
404 for name in $names; do
407 [ "${fqdn%.*}" == "$fqdn" ] && \
408 fqdn="$fqdn${DOMAIN:+.$DOMAIN}"
410 xappend "--address=/$fqdn/$ip"
413 xappend "--ptr-record=$raddr,$fqdn"
422 config_get srv "$cfg" srv
423 [ -n "$srv" ] || return 0
425 config_get target "$cfg" target
426 [ -n "$target" ] || return 0
428 config_get port "$cfg" port
429 [ -n "$port" ] || return 0
431 config_get class "$cfg" class
432 config_get weight "$cfg" weight
434 local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
436 xappend "--srv-host=$service"
441 local domain relay pref
443 config_get domain "$cfg" domain
444 [ -n "$domain" ] || return 0
446 config_get relay "$cfg" relay
447 [ -n "$relay" ] || return 0
449 config_get pref "$cfg" pref 0
451 local service="$domain,$relay,$pref"
453 xappend "--mx-host=$service"
460 config_get cname "$cfg" cname
461 [ -n "$cname" ] || return 0
463 config_get target "$cfg" target
464 [ -n "$target" ] || return 0
466 xappend "--cname=${cname},${target}"
474 config_get lanaddr "lan" ipaddr
478 # before we can call xappend
479 mkdir -p $(dirname $CONFIGFILE)
481 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
483 # if we did this last, we could override auto-generated config
484 [ -f /etc/dnsmasq.conf ] && {
485 xappend "--conf-file=/etc/dnsmasq.conf"
489 config_foreach dnsmasq dnsmasq
490 config_foreach dhcp_host_add host
492 config_foreach dhcp_boot_add boot
493 config_foreach dhcp_mac_add mac
494 config_foreach dhcp_tag_add tag
495 config_foreach dhcp_vendorclass_add vendorclass
496 config_foreach dhcp_userclass_add userclass
497 config_foreach dhcp_circuitid_add circuitid
498 config_foreach dhcp_remoteid_add remoteid
499 config_foreach dhcp_subscrid_add subscrid
500 config_foreach dhcp_domain_add domain
502 config_foreach dhcp_srv_add srvhost
503 config_foreach dhcp_mx_add mxhost
505 config_foreach dhcp_add dhcp
507 config_foreach dhcp_cname_add cname
511 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && [ -n "$lanaddr" ] && {
512 local hostname="$(uci_get system.@system[0].hostname)"
513 dhcp_domain_add "" "${hostname:-OpenWrt}" "$lanaddr"
516 service_start /usr/sbin/dnsmasq -C $CONFIGFILE && {
517 rm -f /tmp/resolv.conf
518 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
519 echo "search $DOMAIN" >> /tmp/resolv.conf
521 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
522 for DNS_SERVER in $DNS_SERVERS ; do
523 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
529 service_stop /usr/sbin/dnsmasq && {
530 [ -f /tmp/resolv.conf ] && {
531 rm -f /tmp/resolv.conf
532 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf