1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2007-2012 OpenWrt.org
15 CONFIGFILE
="/var/etc/dnsmasq.conf"
16 HOSTFILE
="/tmp/hosts/dhcp"
17 TRUSTANCHORSFILE
="/usr/share/dnsmasq/trust-anchors.conf"
18 TIMESTAMPFILE
="/etc/dnsmasq.time"
19 TIMEVALIDFILE
="/var/state/dnsmasqsec"
24 echo "${value#--}" >> $CONFIGFILE
29 local hex
="${2#0x}" # strip optional "0x" prefix
31 if [ -n "${hex//[0-9a-fA-F]/}" ]; then
32 # is invalid hex literal
36 # convert into host id
39 $(((0x$hex >> 16) % 65536)) \
50 while [ -n "$ip" ]; do
53 res
="$(($res + $part))"
54 [ "${ip%.*}" != "$ip" ] && ip
="${ip#*.}" || ip
=
61 local stamp
="/var/run/dnsmasq.$ifname.dhcp"
64 [ -s "$stamp" ] && return $
(cat "$stamp")
66 udhcpc
-n -q -s /bin
/true
-t 1 -i "$ifname" >&- && rv
=1 || rv
=0
70 "found already running DHCP-server on interface '$ifname'" \
71 "refusing to start, use 'option force 1' to override"
78 pidof dnsmasq
>/dev
/null || \
79 logger
-t dnsmasq
"$@"
87 config_get_bool _loctmp
"$section" "$option" 0
88 [ $_loctmp -gt 0 ] && xappend
"$value"
97 config_get _loctmp
"$section" "$option" "$default"
98 [ -z "$_loctmp" ] && return 0
99 xappend
"$switch=$_loctmp"
103 xappend
"--server=$1"
107 xappend
"--address=$1"
115 local ifname
=$
(uci_get_state network
"$1" ifname
"$1")
116 xappend
"--interface=$ifname"
119 append_notinterface
() {
120 local ifname
=$
(uci_get_state network
"$1" ifname
"$1")
121 xappend
"--except-interface=$ifname"
125 xappend
"--addn-hosts=$1"
128 append_bogusnxdomain
() {
129 xappend
"--bogus-nxdomain=$1"
132 append_pxe_service
() {
133 xappend
"--pxe-service=$1"
138 append_bool
"$cfg" authoritative
"--dhcp-authoritative"
139 append_bool
"$cfg" nodaemon
"--no-daemon"
140 append_bool
"$cfg" domainneeded
"--domain-needed"
141 append_bool
"$cfg" filterwin2k
"--filterwin2k"
142 append_bool
"$cfg" nohosts
"--no-hosts"
143 append_bool
"$cfg" nonegcache
"--no-negcache"
144 append_bool
"$cfg" strictorder
"--strict-order"
145 append_bool
"$cfg" logqueries
"--log-queries=extra"
146 append_bool
"$cfg" noresolv
"--no-resolv"
147 append_bool
"$cfg" localise_queries
"--localise-queries"
148 append_bool
"$cfg" readethers
"--read-ethers"
149 append_bool
"$cfg" dbus
"--enable-dbus"
150 append_bool
"$cfg" boguspriv
"--bogus-priv"
151 append_bool
"$cfg" expandhosts
"--expand-hosts"
152 config_get tftp_root
"$cfg" "tftp_root"
153 [ -d "$tftp_root" ] && append_bool
"$cfg" enable_tftp
"--enable-tftp"
154 append_bool
"$cfg" tftp_no_fail
"--tftp-no-fail"
155 append_bool
"$cfg" nonwildcard
"--bind-dynamic"
156 append_bool
"$cfg" fqdn
"--dhcp-fqdn"
157 append_bool
"$cfg" proxydnssec
"--proxy-dnssec"
158 append_bool
"$cfg" localservice
"--local-service"
159 append_bool
"$cfg" quietdhcp
"--quiet-dhcp"
160 append_bool
"$cfg" sequential_ip
"--dhcp-sequential-ip"
161 append_bool
"$cfg" allservers
"--all-servers"
162 append_bool
"$cfg" noping
"--no-ping"
164 append_parm
"$cfg" dhcpscript
"--dhcp-script"
165 append_parm
"$cfg" cachesize
"--cache-size"
166 append_parm
"$cfg" dnsforwardmax
"--dns-forward-max"
167 append_parm
"$cfg" port
"--port"
168 append_parm
"$cfg" ednspacket_max
"--edns-packet-max"
169 append_parm
"$cfg" dhcpleasemax
"--dhcp-lease-max"
170 append_parm
"$cfg" "queryport" "--query-port"
171 append_parm
"$cfg" "minport" "--min-port"
172 append_parm
"$cfg" "maxport" "--max-port"
173 append_parm
"$cfg" "domain" "--domain"
174 append_parm
"$cfg" "local" "--server"
175 config_list_foreach
"$cfg" "server" append_server
176 config_list_foreach
"$cfg" "address" append_address
177 config_list_foreach
"$cfg" "ipset" append_ipset
178 config_list_foreach
"$cfg" "interface" append_interface
179 config_list_foreach
"$cfg" "notinterface" append_notinterface
180 config_list_foreach
"$cfg" "addnhosts" append_addnhosts
181 config_list_foreach
"$cfg" "bogusnxdomain" append_bogusnxdomain
182 append_parm
"$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
183 append_parm
"$cfg" "resolvfile" "--resolv-file" "/tmp/resolv.conf.auto"
184 append_parm
"$cfg" "serversfile" "--servers-file"
185 append_parm
"$cfg" "tftp_root" "--tftp-root"
186 append_parm
"$cfg" "dhcp_boot" "--dhcp-boot"
187 append_parm
"$cfg" "local_ttl" "--local-ttl"
188 append_parm
"$cfg" "pxe_prompt" "--pxe-prompt"
189 config_list_foreach
"$cfg" "pxe_service" append_pxe_service
190 config_get DOMAIN
"$cfg" domain
192 config_get_bool ADD_LOCAL_DOMAIN
"$cfg" add_local_domain
1
193 config_get_bool ADD_LOCAL_HOSTNAME
"$cfg" add_local_hostname
1
195 config_get_bool readethers
"$cfg" readethers
196 [ "$readethers" = "1" -a \
! -e "/etc/ethers" ] && touch /etc
/ethers
198 config_get leasefile
$cfg leasefile
"/tmp/dhcp.leases"
199 [ -n "$leasefile" -a \
! -e "$leasefile" ] && touch "$leasefile"
200 config_get_bool cachelocal
"$cfg" cachelocal
1
202 config_get_bool noresolv
"$cfg" noresolv
0
203 if [ "$noresolv" != "1" ]; then
204 config_get resolvfile
"$cfg" resolvfile
"/tmp/resolv.conf.auto"
205 # So jail doesn't complain if file missing
206 [ -n "$resolvfile" -a \
! -e "$resolvfile" ] && touch "$resolvfile"
209 config_get hostsfile
"$cfg" dhcphostsfile
210 [ -e "$hostsfile" ] && xappend
"--dhcp-hostsfile=$hostsfile"
213 config_get_bool rebind
"$cfg" rebind_protection
1
214 [ $rebind -gt 0 ] && {
216 "DNS rebinding protection is active," \
217 "will discard upstream RFC1918 responses!"
218 xappend
"--stop-dns-rebind"
220 local rebind_localhost
221 config_get_bool rebind_localhost
"$cfg" rebind_localhost
0
222 [ $rebind_localhost -gt 0 ] && {
223 log_once
"Allowing 127.0.0.0/8 responses"
224 xappend
"--rebind-localhost-ok"
227 append_rebind_domain
() {
228 log_once
"Allowing RFC1918 responses for domain $1"
229 xappend
"--rebind-domain-ok=$1"
232 config_list_foreach
"$cfg" rebind_domain append_rebind_domain
235 config_get_bool dnssec
"$cfg" dnssec
0
236 [ "$dnssec" -gt 0 ] && {
237 xappend
"--conf-file=$TRUSTANCHORSFILE"
239 [ -x /etc
/init.d
/sysntpd
] && {
240 /etc
/init.d
/sysntpd enabled
241 [ "$?" -ne 0 -o "$(uci_get system.ntp.enabled)" = "1" ] && {
242 [ -f "$TIMEVALIDFILE" ] || xappend
"--dnssec-no-timecheck"
245 append_bool
"$cfg" dnsseccheckunsigned
"--dnssec-check-unsigned"
248 dhcp_option_add
"$cfg" "" 0
250 xappend
"--dhcp-broadcast=tag:needs-broadcast"
252 mkdir
-p /tmp
/hosts
/tmp
/dnsmasq.d
253 xappend
"--addn-hosts=/tmp/hosts"
254 xappend
"--conf-dir=/tmp/dnsmasq.d"
255 xappend
"--user=dnsmasq"
256 xappend
"--group=dnsmasq"
260 config_get_bool enable_tftp
"$cfg" enable_tftp
0
261 [ "$enable_tftp" -gt 0 ] && {
262 config_get tftp_root
"$cfg" tftp_root
263 append EXTRA_MOUNT
$tftp_root
267 dhcp_subscrid_add
() {
270 config_get networkid
"$cfg" networkid
271 [ -n "$networkid" ] ||
return 0
273 config_get subscriberid
"$cfg" subscriberid
274 [ -n "$subscriberid" ] ||
return 0
276 xappend
"--dhcp-subscrid=$networkid,$subscriberid"
278 config_get_bool force
"$cfg" force
0
280 dhcp_option_add
"$cfg" "$networkid" "$force"
283 dhcp_remoteid_add
() {
286 config_get networkid
"$cfg" networkid
287 [ -n "$networkid" ] ||
return 0
289 config_get remoteid
"$cfg" remoteid
290 [ -n "$remoteid" ] ||
return 0
292 xappend
"--dhcp-remoteid=$networkid,$remoteid"
294 config_get_bool force
"$cfg" force
0
296 dhcp_option_add
"$cfg" "$networkid" "$force"
299 dhcp_circuitid_add
() {
302 config_get networkid
"$cfg" networkid
303 [ -n "$networkid" ] ||
return 0
305 config_get circuitid
"$cfg" circuitid
306 [ -n "$circuitid" ] ||
return 0
308 xappend
"--dhcp-circuitid=$networkid,$circuitid"
310 config_get_bool force
"$cfg" force
0
312 dhcp_option_add
"$cfg" "$networkid" "$force"
315 dhcp_userclass_add
() {
318 config_get networkid
"$cfg" networkid
319 [ -n "$networkid" ] ||
return 0
321 config_get userclass
"$cfg" userclass
322 [ -n "$userclass" ] ||
return 0
324 xappend
"--dhcp-userclass=$networkid,$userclass"
326 config_get_bool force
"$cfg" force
0
328 dhcp_option_add
"$cfg" "$networkid" "$force"
331 dhcp_vendorclass_add
() {
334 config_get networkid
"$cfg" networkid
335 [ -n "$networkid" ] ||
return 0
337 config_get vendorclass
"$cfg" vendorclass
338 [ -n "$vendorclass" ] ||
return 0
340 xappend
"--dhcp-vendorclass=$networkid,$vendorclass"
342 config_get_bool force
"$cfg" force
0
344 dhcp_option_add
"$cfg" "$networkid" "$force"
350 config_get_bool force
"$cfg" force
0
352 config_get networkid
"$cfg" networkid
353 [ -n "$networkid" ] && dhcp_option_add
"$cfg" "$networkid" "$force"
355 config_get_bool
enable "$cfg" enable 1
356 [ "$enable" = "0" ] && return 0
358 config_get name
"$cfg" name
359 config_get ip
"$cfg" ip
360 [ -n "$ip" -o -n "$name" ] ||
return 0
362 config_get_bool dns
"$cfg" dns
0
363 [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
364 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
367 config_get mac
"$cfg" mac
368 if [ -n "$mac" ]; then
369 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
371 for m
in $mac; do append macs
"$m" ","; done
373 # --dhcp-host=lap,192.168.0.199
374 [ -n "$name" ] ||
return 0
379 config_get tag
"$cfg" tag
381 if [ "$DHCPv6CAPABLE" -eq 1 ]; then
382 config_get hostid
"$cfg" hostid
383 if [ -n "$hostid" ]; then
384 hex_to_hostid hostid
"$hostid"
388 config_get_bool broadcast
"$cfg" broadcast
0
389 [ "$broadcast" = "0" ] && broadcast
=
391 config_get leasetime
"$cfg" leasetime
393 xappend
"--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip${hostid:+,[::$hostid]}}${name:+,$name}${leasetime:+,$leasetime}"
401 [ -n "$tag" ] ||
return 0
403 config_get_bool force
"$cfg" force
0
404 [ "$force" = "0" ] && force
=
406 config_get option
"$cfg" dhcp_option
408 xappend
"--dhcp-option${force:+-force}=tag:$tag,$o"
415 config_get networkid
"$cfg" networkid
416 [ -n "$networkid" ] ||
return 0
418 config_get mac
"$cfg" mac
419 [ -n "$mac" ] ||
return 0
421 xappend
"--dhcp-mac=$networkid,$mac"
423 dhcp_option_add
"$cfg" "$networkid"
429 config_get networkid
"$cfg" networkid
431 config_get filename
"$cfg" filename
432 [ -n "$filename" ] ||
return 0
434 config_get servername
"$cfg" servername
435 config_get serveraddress
"$cfg" serveraddress
437 [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
439 xappend
"--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
441 config_get_bool force
"$cfg" force
0
443 dhcp_option_add
"$cfg" "$networkid" "$force"
449 config_get net
"$cfg" interface
450 [ -n "$net" ] ||
return 0
452 config_get dhcpv4
"$cfg" dhcpv4
453 [ "$dhcpv4" != "disabled" ] ||
return 0
455 config_get networkid
"$cfg" networkid
456 [ -n "$networkid" ] || networkid
="$net"
458 network_get_subnet subnet
"$net" ||
return 0
459 network_get_device ifname
"$net" ||
return 0
460 network_get_protocol proto
"$net" ||
return 0
462 [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver
"$net" && {
463 DNS_SERVERS
="$DNS_SERVERS $dnsserver"
466 append_bool
"$cfg" ignore
"--no-dhcp-interface=$ifname" && return 0
468 # Do not support non-static interfaces for now
469 [ static
= "$proto" ] ||
return 0
471 # Override interface netmask with dhcp config if applicable
472 config_get netmask
"$cfg" netmask
"${subnet##*/}"
474 #check for an already active dhcp server on the interface, unless 'force' is set
475 config_get_bool force
"$cfg" force
0
476 [ $force -gt 0 ] || dhcp_check
"$ifname" ||
return 0
478 config_get start
"$cfg" start
479 config_get limit
"$cfg" limit
480 config_get leasetime
"$cfg" leasetime
481 config_get options
"$cfg" options
482 config_get_bool dynamicdhcp
"$cfg" dynamicdhcp
1
484 leasetime
="${leasetime:-12h}"
485 start
="$(dhcp_calc "${start:-100}")"
486 limit
="${limit:-150}"
487 [ "$limit" -gt 0 ] && limit
=$
((limit-1
))
488 eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
489 if [ "$dynamicdhcp" = "0" ]; then END
="static"; fi
490 xappend
"--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
492 dhcp_option_add
"$cfg" "$networkid"
500 [ "$force" = "0" ] && force
=
502 config_get dhcp_option
"$cfg" dhcp_option
503 for o
in $dhcp_option; do
504 xappend
"--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
511 local ip name names record
513 config_get names
"$cfg" name
"$2"
514 [ -n "$names" ] ||
return 0
516 config_get ip
"$cfg" ip
"$3"
517 [ -n "$ip" ] ||
return 0
519 for name
in $names; do
520 record
="${record:+$record }$name"
523 echo "$ip $record" >> $HOSTFILE
529 config_get srv
"$cfg" srv
530 [ -n "$srv" ] ||
return 0
532 config_get target
"$cfg" target
533 [ -n "$target" ] ||
return 0
535 config_get port
"$cfg" port
536 [ -n "$port" ] ||
return 0
538 config_get class
"$cfg" class
539 config_get weight
"$cfg" weight
541 local service
="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
543 xappend
"--srv-host=$service"
548 local domain relay pref
550 config_get domain
"$cfg" domain
551 [ -n "$domain" ] ||
return 0
553 config_get relay
"$cfg" relay
554 [ -n "$relay" ] ||
return 0
556 config_get pref
"$cfg" pref
0
558 local service
="$domain,$relay,$pref"
560 xappend
"--mx-host=$service"
567 config_get cname
"$cfg" cname
568 [ -n "$cname" ] ||
return 0
570 config_get target
"$cfg" target
571 [ -n "$target" ] ||
return 0
573 xappend
"--cname=${cname},${target}"
576 dhcp_hostrecord_add
() {
578 local names addresses record val
580 config_get names
"$cfg" name
"$2"
581 if [ -z "$names" ]; then
585 config_get addresses
"$cfg" ip
"$3"
586 if [ -z "$addresses" ]; then
590 for val
in $names $addresses; do
591 record
="${record:+$record,}$val"
594 xappend
"--host-record=$record"
599 local local_addr server_addr interface
601 config_get local_addr
"$cfg" local_addr
602 [ -n "$local_addr" ] ||
return 0
604 config_get server_addr
"$cfg" server_addr
605 [ -n "$server_addr" ] ||
return 0
607 config_get interface
"$cfg" interface
608 if [ -z "$interface" ]; then
609 xappend
"--dhcp-relay=$local_addr,$server_addr"
611 xappend
"--dhcp-relay=$local_addr,$server_addr,$interface"
617 procd_add_reload_trigger
"dhcp"
621 # Will be launched through hotplug
626 include
/lib
/functions
630 # before we can call xappend
631 mkdir
-p /var
/run
/dnsmasq
/
632 mkdir
-p $
(dirname $CONFIGFILE)
633 mkdir
-p /var
/lib
/misc
634 touch /tmp
/dhcp.leases
636 [ -f "$TIMESTAMPFILE" ] && rm -f "$TIMESTAMPFILE"
638 echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
639 echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
641 # if we did this last, we could override auto-generated config
642 [ -f /etc
/dnsmasq.conf
] && {
643 xappend
"--conf-file=/etc/dnsmasq.conf"
646 $PROG --version |
grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE
=1 || DHCPv6CAPABLE
=0
649 config_foreach dnsmasq dnsmasq
650 config_foreach dhcp_host_add
host
652 config_foreach dhcp_boot_add boot
653 config_foreach dhcp_mac_add mac
654 config_foreach dhcp_tag_add tag
655 config_foreach dhcp_vendorclass_add vendorclass
656 config_foreach dhcp_userclass_add userclass
657 config_foreach dhcp_circuitid_add circuitid
658 config_foreach dhcp_remoteid_add remoteid
659 config_foreach dhcp_subscrid_add subscrid
660 config_foreach dhcp_domain_add domain
661 config_foreach dhcp_hostrecord_add hostrecord
662 config_foreach dhcp_relay_add relay
665 [ $ADD_LOCAL_HOSTNAME -eq 1 ] && {
666 local lanaddr lanaddr6
667 local ulaprefix
="$(uci_get network @globals[0] ula_prefix)"
668 local hostname
="$(uci_get system @system[0] hostname Lede)"
670 network_get_ipaddr lanaddr
"lan" && {
671 dhcp_domain_add
"" "$hostname" "$lanaddr"
674 [ -n "$ulaprefix" ] && network_get_ipaddrs6 lanaddr6
"lan" && {
675 for lanaddr6
in $lanaddr6; do
677 "${ulaprefix%%:/*}"*)
678 dhcp_domain_add
"" "$hostname" "$lanaddr6"
686 config_foreach dhcp_srv_add srvhost
687 config_foreach dhcp_mx_add mxhost
690 config_get odhcpd_is_active odhcpd maindhcp
691 if [ "$odhcpd_is_active" != "1" ]; then
692 config_foreach dhcp_add dhcp
696 config_foreach dhcp_cname_add cname
699 rm -f /tmp
/resolv.conf
700 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
701 echo "search $DOMAIN" >> /tmp
/resolv.conf
703 DNS_SERVERS
="$DNS_SERVERS 127.0.0.1"
704 for DNS_SERVER
in $DNS_SERVERS ; do
705 echo "nameserver $DNS_SERVER" >> /tmp
/resolv.conf
709 procd_set_param
command $PROG -C $CONFIGFILE -k -x /var
/run
/dnsmasq
/dnsmasq.pid
710 procd_set_param
file $CONFIGFILE
711 procd_set_param respawn
713 procd_add_jail dnsmasq ubus log
714 procd_add_jail_mount
$CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE /etc
/passwd
/etc
/group
/etc
/TZ
/dev
/null
/dev
/urandom
/etc
/dnsmasq.conf
/tmp
/dnsmasq.d
/tmp
/resolv.conf.auto
/etc
/hosts
/etc
/ethers
$EXTRA_MOUNT
715 procd_add_jail_mount_rw
/var
/run
/dnsmasq
/ /tmp
/dhcp.leases
721 rc_procd start_service
"$@"
726 [ -f /tmp
/resolv.conf
] && {
727 rm -f /tmp
/resolv.conf
728 ln -s /tmp
/resolv.conf.auto
/tmp
/resolv.conf
730 rm -f /var
/run
/dnsmasq.
*.dhcp