rpcd: iwinfo plugin fixes
[openwrt.git] / package / network / services / dnsmasq / files / dnsmasq.init
1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2007-2012 OpenWrt.org
3
4 START=60
5
6 USE_PROCD=1
7 PROG=/usr/sbin/dnsmasq
8
9 DNS_SERVERS=""
10 DOMAIN=""
11
12 ADD_LOCAL_DOMAIN=1
13 ADD_LOCAL_HOSTNAME=1
14
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
20 xappend() {
21         local value="$1"
22
23         echo "${value#--}" >> $CONFIGFILE
24 }
25
26 dhcp_calc() {
27         local ip="$1"
28         local res=0
29
30         while [ -n "$ip" ]; do
31                 part="${ip%%.*}"
32                 res="$(($res * 256))"
33                 res="$(($res + $part))"
34                 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
35         done
36         echo "$res"
37 }
38
39 dhcp_check() {
40         local ifname="$1"
41         local stamp="/var/run/dnsmasq.$ifname.dhcp"
42         local rv=0
43
44         [ -s "$stamp" ] && return $(cat "$stamp")
45
46         udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
47
48         [ $rv -eq 1 ] && \
49                 logger -t dnsmasq \
50                         "found already running DHCP-server on interface '$ifname'" \
51                         "refusing to start, use 'option force 1' to override"
52
53         echo $rv > "$stamp"
54         return $rv
55 }
56
57 log_once() {
58         pidof dnsmasq >/dev/null || \
59                 logger -t dnsmasq "$@"
60 }
61
62 append_bool() {
63         local section="$1"
64         local option="$2"
65         local value="$3"
66         local _loctmp
67         config_get_bool _loctmp "$section" "$option" 0
68         [ $_loctmp -gt 0 ] && xappend "$value"
69 }
70
71 append_parm() {
72         local section="$1"
73         local option="$2"
74         local switch="$3"
75         local _loctmp
76         config_get _loctmp "$section" "$option"
77         [ -z "$_loctmp" ] && return 0
78         xappend "$switch=$_loctmp"
79 }
80
81 append_server() {
82         xappend "--server=$1"
83 }
84
85 append_address() {
86         xappend "--address=$1"
87 }
88
89 append_ipset() {
90         xappend "--ipset=$1"
91 }
92
93 append_interface() {
94         local ifname=$(uci_get_state network "$1" ifname "$1")
95         xappend "--interface=$ifname"
96 }
97
98 append_notinterface() {
99         local ifname=$(uci_get_state network "$1" ifname "$1")
100         xappend "--except-interface=$ifname"
101 }
102
103 append_addnhosts() {
104         xappend "--addn-hosts=$1"
105 }
106
107 append_bogusnxdomain() {
108         xappend "--bogus-nxdomain=$1"
109 }
110
111 append_pxe_service() {
112         xappend "--pxe-service=$1"
113 }
114
115 dnsmasq() {
116         local cfg="$1"
117         append_bool "$cfg" authoritative "--dhcp-authoritative"
118         append_bool "$cfg" nodaemon "--no-daemon"
119         append_bool "$cfg" domainneeded "--domain-needed"
120         append_bool "$cfg" filterwin2k "--filterwin2k"
121         append_bool "$cfg" nohosts "--no-hosts"
122         append_bool "$cfg" nonegcache "--no-negcache"
123         append_bool "$cfg" strictorder "--strict-order"
124         append_bool "$cfg" logqueries "--log-queries=extra"
125         append_bool "$cfg" noresolv "--no-resolv"
126         append_bool "$cfg" localise_queries "--localise-queries"
127         append_bool "$cfg" readethers "--read-ethers"
128         append_bool "$cfg" dbus "--enable-dbus"
129         append_bool "$cfg" boguspriv "--bogus-priv"
130         append_bool "$cfg" expandhosts "--expand-hosts"
131         config_get tftp_root "$cfg" "tftp_root"
132         [ -d "$tftp_root" ] && append_bool "$cfg" enable_tftp "--enable-tftp"
133         append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
134         append_bool "$cfg" nonwildcard "--bind-dynamic"
135         append_bool "$cfg" fqdn "--dhcp-fqdn"
136         append_bool "$cfg" proxydnssec "--proxy-dnssec"
137         append_bool "$cfg" localservice "--local-service"
138         append_bool "$cfg" quietdhcp "--quiet-dhcp"
139         append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
140         append_bool "$cfg" allservers "--all-servers"
141         append_bool "$cfg" noping "--no-ping"
142
143         append_parm "$cfg" dhcpscript "--dhcp-script"
144         append_parm "$cfg" cachesize "--cache-size"
145         append_parm "$cfg" dnsforwardmax "--dns-forward-max"
146         append_parm "$cfg" port "--port"
147         append_parm "$cfg" ednspacket_max "--edns-packet-max"
148         append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
149         append_parm "$cfg" "queryport" "--query-port"
150         append_parm "$cfg" "minport" "--min-port"
151         append_parm "$cfg" "domain" "--domain"
152         append_parm "$cfg" "local" "--server"
153         config_list_foreach "$cfg" "server" append_server
154         config_list_foreach "$cfg" "address" append_address
155         config_list_foreach "$cfg" "ipset" append_ipset
156         config_list_foreach "$cfg" "interface" append_interface
157         config_list_foreach "$cfg" "notinterface" append_notinterface
158         config_list_foreach "$cfg" "addnhosts" append_addnhosts
159         config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
160         append_parm "$cfg" "leasefile" "--dhcp-leasefile"
161         append_parm "$cfg" "resolvfile" "--resolv-file"
162         append_parm "$cfg" "serversfile" "--servers-file"
163         append_parm "$cfg" "tftp_root" "--tftp-root"
164         append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
165         append_parm "$cfg" "local_ttl" "--local-ttl"
166         append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
167         config_list_foreach "$cfg" "pxe_service" append_pxe_service
168         config_get DOMAIN "$cfg" domain
169
170         config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
171         config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
172
173         config_get_bool readethers "$cfg" readethers
174         [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
175
176         config_get leasefile $cfg leasefile
177         [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
178         config_get_bool cachelocal "$cfg" cachelocal 1
179
180         config_get hostsfile "$cfg" dhcphostsfile
181         [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
182
183         local rebind
184         config_get_bool rebind "$cfg" rebind_protection 1
185         [ $rebind -gt 0 ] && {
186                 log_once \
187                         "DNS rebinding protection is active," \
188                         "will discard upstream RFC1918 responses!"
189                 xappend "--stop-dns-rebind"
190
191                 local rebind_localhost
192                 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
193                 [ $rebind_localhost -gt 0 ] && {
194                         log_once "Allowing 127.0.0.0/8 responses"
195                         xappend "--rebind-localhost-ok"
196                 }
197
198                 append_rebind_domain() {
199                         log_once "Allowing RFC1918 responses for domain $1"
200                         xappend "--rebind-domain-ok=$1"
201                 }
202
203                 config_list_foreach "$cfg" rebind_domain append_rebind_domain
204         }
205
206         config_get_bool dnssec "$cfg" dnssec 0
207         [ "$dnssec" -gt 0 ] && {
208                 xappend "--conf-file=$TRUSTANCHORSFILE"
209                 xappend "--dnssec"
210                 xappend "--dnssec-timestamp=$TIMESTAMPFILE"
211                 append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
212         }
213
214         dhcp_option_add "$cfg" "" 0
215
216         xappend "--dhcp-broadcast=tag:needs-broadcast"
217
218         mkdir -p /tmp/hosts /tmp/dnsmasq.d
219         xappend "--addn-hosts=/tmp/hosts"
220         xappend "--conf-dir=/tmp/dnsmasq.d"
221         xappend "--user=dnsmasq"
222         xappend "--group=dnsmasq"
223
224         echo >> $CONFIGFILE
225
226         config_get_bool enable_tftp "$cfg" enable_tftp 0
227         [ "$enable_tftp" -gt 0 ] && {
228                 config_get tftp_root "$cfg" tftp_root
229                 append EXTRA_MOUNT $tftp_root
230         }
231 }
232
233 dhcp_subscrid_add() {
234         local cfg="$1"
235
236         config_get networkid "$cfg" networkid
237         [ -n "$networkid" ] || return 0
238
239         config_get subscriberid "$cfg" subscriberid
240         [ -n "$subscriberid" ] || return 0
241
242         xappend "--dhcp-subscrid=$networkid,$subscriberid"
243
244         config_get_bool force "$cfg" force 0
245
246         dhcp_option_add "$cfg" "$networkid" "$force"
247 }
248
249 dhcp_remoteid_add() {
250         local cfg="$1"
251
252         config_get networkid "$cfg" networkid
253         [ -n "$networkid" ] || return 0
254
255         config_get remoteid "$cfg" remoteid
256         [ -n "$remoteid" ] || return 0
257
258         xappend "--dhcp-remoteid=$networkid,$remoteid"
259
260         config_get_bool force "$cfg" force 0
261
262         dhcp_option_add "$cfg" "$networkid" "$force"
263 }
264
265 dhcp_circuitid_add() {
266         local cfg="$1"
267
268         config_get networkid "$cfg" networkid
269         [ -n "$networkid" ] || return 0
270
271         config_get circuitid "$cfg" circuitid
272         [ -n "$circuitid" ] || return 0
273
274         xappend "--dhcp-circuitid=$networkid,$circuitid"
275
276         config_get_bool force "$cfg" force 0
277
278         dhcp_option_add "$cfg" "$networkid" "$force"
279 }
280
281 dhcp_userclass_add() {
282         local cfg="$1"
283
284         config_get networkid "$cfg" networkid
285         [ -n "$networkid" ] || return 0
286
287         config_get userclass "$cfg" userclass
288         [ -n "$userclass" ] || return 0
289
290         xappend "--dhcp-userclass=$networkid,$userclass"
291
292         config_get_bool force "$cfg" force 0
293
294         dhcp_option_add "$cfg" "$networkid" "$force"
295 }
296
297 dhcp_vendorclass_add() {
298         local cfg="$1"
299
300         config_get networkid "$cfg" networkid
301         [ -n "$networkid" ] || return 0
302
303         config_get vendorclass "$cfg" vendorclass
304         [ -n "$vendorclass" ] || return 0
305
306         xappend "--dhcp-vendorclass=$networkid,$vendorclass"
307
308         config_get_bool force "$cfg" force 0
309
310         dhcp_option_add "$cfg" "$networkid" "$force"
311 }
312
313 dhcp_host_add() {
314         local cfg="$1"
315
316         config_get_bool force "$cfg" force 0
317
318         config_get networkid "$cfg" networkid
319         [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
320
321         config_get_bool enable "$cfg" enable 1
322         [ "$enable" = "0" ] && return 0
323
324         config_get name "$cfg" name
325         config_get ip "$cfg" ip
326         [ -n "$ip" -o -n "$name" ] || return 0
327
328         config_get_bool dns "$cfg" dns 0
329         [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
330                 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
331         }
332
333         config_get mac "$cfg" mac
334         if [ -n "$mac" ]; then
335                 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
336                 macs=""
337                 for m in $mac; do append macs "$m" ","; done
338         else
339                 # --dhcp-host=lap,192.168.0.199
340                 [ -n "$name" ] || return 0
341                 macs="$name"
342                 name=""
343         fi
344
345         config_get tag "$cfg" tag
346
347         config_get_bool broadcast "$cfg" broadcast 0
348         [ "$broadcast" = "0" ] && broadcast=
349
350         config_get leasetime "$cfg" leasetime
351
352         xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}${leasetime:+,$leasetime}"
353 }
354
355 dhcp_tag_add() {
356         local cfg="$1"
357
358         tag="$cfg"
359
360         [ -n "$tag" ] || return 0
361
362         config_get_bool force "$cfg" force 0
363         [ "$force" = "0" ] && force=
364
365         config_get option "$cfg" dhcp_option
366         for o in $option; do
367                 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
368         done
369 }
370
371 dhcp_mac_add() {
372         local cfg="$1"
373
374         config_get networkid "$cfg" networkid
375         [ -n "$networkid" ] || return 0
376
377         config_get mac "$cfg" mac
378         [ -n "$mac" ] || return 0
379
380         xappend "--dhcp-mac=$networkid,$mac"
381
382         dhcp_option_add "$cfg" "$networkid"
383 }
384
385 dhcp_boot_add() {
386         local cfg="$1"
387
388         config_get networkid "$cfg" networkid
389
390         config_get filename "$cfg" filename
391         [ -n "$filename" ] || return 0
392
393         config_get servername "$cfg" servername
394         config_get serveraddress "$cfg" serveraddress
395
396         [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
397
398         xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
399
400         config_get_bool force "$cfg" force 0
401
402         dhcp_option_add "$cfg" "$networkid" "$force"
403 }
404
405
406 dhcp_add() {
407         local cfg="$1"
408         config_get net "$cfg" interface
409         [ -n "$net" ] || return 0
410
411         config_get dhcpv4 "$cfg" dhcpv4
412         [ "$dhcpv4" != "disabled" ] || return 0
413
414         config_get networkid "$cfg" networkid
415         [ -n "$networkid" ] || networkid="$net"
416
417         network_get_subnet subnet "$net" || return 0
418         network_get_device ifname "$net" || return 0
419         network_get_protocol proto "$net" || return 0
420
421         [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
422                 DNS_SERVERS="$DNS_SERVERS $dnsserver"
423         }
424
425         append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
426
427         # Do not support non-static interfaces for now
428         [ static = "$proto" ] || return 0
429
430         # Override interface netmask with dhcp config if applicable
431         config_get netmask "$cfg" netmask "${subnet##*/}"
432
433         #check for an already active dhcp server on the interface, unless 'force' is set
434         config_get_bool force "$cfg" force 0
435         [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
436
437         config_get start "$cfg" start
438         config_get limit "$cfg" limit
439         config_get leasetime "$cfg" leasetime
440         config_get options "$cfg" options
441         config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
442
443         leasetime="${leasetime:-12h}"
444         start="$(dhcp_calc "${start:-100}")"
445         limit="${limit:-150}"
446         [ "$limit" -gt 0 ] && limit=$((limit-1))
447         eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
448         if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
449         xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
450
451         dhcp_option_add "$cfg" "$networkid"
452 }
453
454 dhcp_option_add() {
455         local cfg="$1"
456         local networkid="$2"
457         local force="$3"
458
459         [ "$force" = "0" ] && force=
460
461         config_get dhcp_option "$cfg" dhcp_option
462         for o in $dhcp_option; do
463                 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
464         done
465
466 }
467
468 dhcp_domain_add() {
469         local cfg="$1"
470         local ip name names record
471
472         config_get names "$cfg" name "$2"
473         [ -n "$names" ] || return 0
474
475         config_get ip "$cfg" ip "$3"
476         [ -n "$ip" ] || return 0
477
478         for name in $names; do
479                 record="${record:+$record }$name"
480         done
481
482         echo "$ip $record" >> $HOSTFILE
483 }
484
485 dhcp_srv_add() {
486         local cfg="$1"
487
488         config_get srv "$cfg" srv
489         [ -n "$srv" ] || return 0
490
491         config_get target "$cfg" target
492         [ -n "$target" ] || return 0
493
494         config_get port "$cfg" port
495         [ -n "$port" ] || return 0
496
497         config_get class "$cfg" class
498         config_get weight "$cfg" weight
499
500         local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
501
502         xappend "--srv-host=$service"
503 }
504
505 dhcp_mx_add() {
506         local cfg="$1"
507         local domain relay pref
508
509         config_get domain "$cfg" domain
510         [ -n "$domain" ] || return 0
511
512         config_get relay "$cfg" relay
513         [ -n "$relay" ] || return 0
514
515         config_get pref "$cfg" pref 0
516
517         local service="$domain,$relay,$pref"
518
519         xappend "--mx-host=$service"
520 }
521
522 dhcp_cname_add() {
523         local cfg="$1"
524         local cname target
525
526         config_get cname "$cfg" cname
527         [ -n "$cname" ] || return 0
528
529         config_get target "$cfg" target
530         [ -n "$target" ] || return 0
531
532         xappend "--cname=${cname},${target}"
533 }
534
535 dhcp_hostrecord_add() {
536         local cfg="$1"
537         local names addresses record val
538
539         config_get names "$cfg" name "$2"
540         if [ -z "$names" ]; then
541                 return 0
542         fi
543
544         config_get addresses "$cfg" ip "$3"
545         if [ -z "$addresses" ]; then
546                 return 0
547         fi
548
549         for val in $names $addresses; do
550                 record="${record:+$record,}$val"
551         done
552
553         xappend "--host-record=$record"
554 }
555
556 dhcp_relay_add() {
557         local cfg="$1"
558         local local_addr server_addr interface
559
560         config_get local_addr "$cfg" local_addr
561         [ -n "$local_addr" ] || return 0
562
563         config_get server_addr "$cfg" server_addr
564         [ -n "$server_addr" ] || return 0
565
566         config_get interface "$cfg" interface
567         if [ -z "$interface" ]; then
568                 xappend "--dhcp-relay=$local_addr,$server_addr"
569         else
570                 xappend "--dhcp-relay=$local_addr,$server_addr,$interface"
571         fi
572 }
573
574 service_triggers()
575 {
576         procd_add_reload_trigger "dhcp"
577 }
578
579 boot() {
580         # Will be launched through hotplug
581         return 0
582 }
583
584 start_service() {
585         include /lib/functions
586
587         config_load dhcp
588
589         # before we can call xappend
590         mkdir -p /var/run/dnsmasq/
591         mkdir -p $(dirname $CONFIGFILE)
592         mkdir -p /var/lib/misc
593         touch /tmp/dhcp.leases
594
595         if [ ! -f "$TIMESTAMPFILE" ]; then
596                 touch "$TIMESTAMPFILE"
597                 chown dnsmasq.dnsmasq "$TIMESTAMPFILE"
598         fi
599
600         echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
601         echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
602
603         # if we did this last, we could override auto-generated config
604         [ -f /etc/dnsmasq.conf ] && {
605                 xappend "--conf-file=/etc/dnsmasq.conf"
606         }
607
608         args=""
609         config_foreach dnsmasq dnsmasq
610         config_foreach dhcp_host_add host
611         echo >> $CONFIGFILE
612         config_foreach dhcp_boot_add boot
613         config_foreach dhcp_mac_add mac
614         config_foreach dhcp_tag_add tag
615         config_foreach dhcp_vendorclass_add vendorclass
616         config_foreach dhcp_userclass_add userclass
617         config_foreach dhcp_circuitid_add circuitid
618         config_foreach dhcp_remoteid_add remoteid
619         config_foreach dhcp_subscrid_add subscrid
620         config_foreach dhcp_domain_add domain
621         config_foreach dhcp_hostrecord_add hostrecord
622         config_foreach dhcp_relay_add relay
623
624         # add own hostname
625         [ $ADD_LOCAL_HOSTNAME -eq 1 ] && {
626                 local lanaddr lanaddr6
627                 local ulaprefix="$(uci_get network @globals[0] ula_prefix)"
628                 local hostname="$(uci_get system @system[0] hostname OpenWrt)"
629
630                 network_get_ipaddr lanaddr "lan" && {
631                         dhcp_domain_add "" "$hostname" "$lanaddr"
632                 }
633
634                 [ -n "$ulaprefix" ] && network_get_ipaddrs6 lanaddr6 "lan" && {
635                         for lanaddr6 in $lanaddr6; do
636                                 case "$lanaddr6" in
637                                         "${ulaprefix%%:/*}"*)
638                                                 dhcp_domain_add "" "$hostname" "$lanaddr6"
639                                         ;;
640                                 esac
641                         done
642                 }
643         }
644
645         echo >> $CONFIGFILE
646         config_foreach dhcp_srv_add srvhost
647         config_foreach dhcp_mx_add mxhost
648         echo >> $CONFIGFILE
649
650         config_get odhcpd_is_active odhcpd maindhcp
651         if [ "$odhcpd_is_active" != "1" ]; then
652                 config_foreach dhcp_add dhcp
653         fi
654
655         echo >> $CONFIGFILE
656         config_foreach dhcp_cname_add cname
657         echo >> $CONFIGFILE
658
659         rm -f /tmp/resolv.conf
660         [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
661                 echo "search $DOMAIN" >> /tmp/resolv.conf
662         }
663         DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
664         for DNS_SERVER in $DNS_SERVERS ; do
665                 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
666         done
667
668         procd_open_instance
669         procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq.pid
670         procd_set_param file $CONFIGFILE
671         procd_set_param respawn
672
673         procd_add_jail dnsmasq ubus log
674         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
675         procd_add_jail_mount_rw /var/run/dnsmasq/ /tmp/dhcp.leases $TIMESTAMPFILE
676
677         procd_close_instance
678 }
679
680 reload_service() {
681         rc_procd start_service "$@"
682         return 0
683 }
684
685 stop_service() {
686         [ -f /tmp/resolv.conf ] && {
687                 rm -f /tmp/resolv.conf
688                 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
689         }
690         rm -f /var/run/dnsmasq.*.dhcp
691 }