package/network/services/dnsmasq/files/dnsmasq.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2007-2012 OpenWrt.org
   3
   4 START=19
   5
   6 USE_PROCD=1
   7 PROG=/usr/sbin/dnsmasq
   8
   9 ADD_LOCAL_DOMAIN=1
  10 ADD_LOCAL_HOSTNAME=1
  11 ADD_WAN_FQDN=0
  12 ADD_LOCAL_FQDN=""
  13
  14 BASECONFIGFILE="/var/etc/dnsmasq.conf"
  15 BASEHOSTFILE="/tmp/hosts/dhcp"
  16 TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
  17 TIMEVALIDFILE="/var/state/dnsmasqsec"
  18 BASEDHCPSTAMPFILE="/var/run/dnsmasq"
  19 DHCPBOGUSHOSTNAMEFILE="/usr/share/dnsmasq/dhcpbogushostname.conf"
  20 RFC6761FILE="/usr/share/dnsmasq/rfc6761.conf"
  21 DHCPSCRIPT="/usr/lib/dnsmasq/dhcp-script.sh"
  22 DHCPSCRIPT_DEPENDS="/usr/share/libubox/jshn.sh /usr/bin/jshn /bin/ubus"
  23
  24 DNSMASQ_DHCP_VER=4
  25
  26 dnsmasq_ignore_opt() {
  27         local opt="$1"
  28
  29         if [ -z "$dnsmasq_features" ]; then
  30                 dnsmasq_features="$(dnsmasq --version | grep -m1 'Compile time options:' | cut -d: -f2) "
  31                 [ "${dnsmasq_features#* DHCP }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp=1
  32                 [ "${dnsmasq_features#* DHCPv6 }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp6=1
  33                 [ "${dnsmasq_features#* DNSSEC }" = "$dnsmasq_features" ] || dnsmasq_has_dnssec=1
  34                 [ "${dnsmasq_features#* TFTP }" = "$dnsmasq_features" ] || dnsmasq_has_tftp=1
  35                 [ "${dnsmasq_features#* ipset }" = "$dnsmasq_features" ] || dnsmasq_has_ipset=1
  36         fi
  37
  38         case "$opt" in
  39                 dhcp-duid|\
  40                 ra-param)
  41                         [ -z "$dnsmasq_has_dhcp6" ] ;;
  42                 dhcp-*|\
  43                 bootp-*|\
  44                 pxe-*)
  45                         [ -z "$dnsmasq_has_dhcp" ] ;;
  46                 dnssec*|\
  47                 trust-anchor)
  48                         if [ -z "$dnsmasq_has_dnssec" ]; then
  49                                 echo "dnsmasq: \"$opt\" requested, but dnssec support is not available" >&2
  50                                 exit 1
  51                         fi
  52                         return 1
  53                         ;;
  54                 tftp-*)
  55                         [ -z "$dnsmasq_has_tftp" ] ;;
  56                 ipset)
  57                         [ -z "$dnsmasq_has_ipset" ] ;;
  58                 *)
  59                         return 1
  60         esac
  61 }
  62
  63 xappend() {
  64         local value="${1#--}"
  65         local opt="${value%%=*}"
  66
  67         if ! dnsmasq_ignore_opt "$opt"; then
  68                 echo "$value" >>$CONFIGFILE_TMP
  69         fi
  70 }
  71
  72 hex_to_hostid() {
  73         local var="$1"
  74         local hex="${2#0x}" # strip optional "0x" prefix
  75
  76         if [ -n "${hex//[0-9a-fA-F]/}" ]; then
  77                 # is invalid hex literal
  78                 return 1
  79         fi
  80
  81         # convert into host id
  82         export "$var=$(
  83                 printf "%0x:%0x" \
  84                 $(((0x$hex >> 16) % 65536)) \
  85                 $(( 0x$hex        % 65536))
  86                 )"
  87
  88         return 0
  89 }
  90
  91 dhcp_calc() {
  92         local ip="$1"
  93         local res=0
  94
  95         while [ -n "$ip" ]; do
  96                 part="${ip%%.*}"
  97                 res="$(($res * 256))"
  98                 res="$(($res + $part))"
  99                 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
 100         done
 101         echo "$res"
 102 }
 103
 104 dhcp_check() {
 105         local ifname="$1"
 106         local stamp="${BASEDHCPSTAMPFILE_CFG}.${ifname}.dhcp"
 107         local rv=0
 108
 109         [ -s "$stamp" ] && return $(cat "$stamp")
 110
 111         # If interface is down, skip it.
 112         # The init script will be called again once the link is up
 113         case "$(devstatus "$ifname" | jsonfilter -e @.up)" in
 114                 false) return 1;;
 115         esac
 116
 117         udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
 118
 119         echo $rv > "$stamp"
 120         return $rv
 121 }
 122
 123 log_once() {
 124         pidof dnsmasq >/dev/null || \
 125                 logger -t dnsmasq "$@"
 126 }
 127
 128 has_handler() {
 129         local file
 130
 131         for file in /etc/hotplug.d/dhcp/* /etc/hotplug.d/tftp/* /etc/hotplug.d/neigh/*; do
 132                 [ -f "$file" ] && return 0
 133         done
 134
 135         return 1
 136 }
 137
 138 append_bool() {
 139         local section="$1"
 140         local option="$2"
 141         local value="$3"
 142         local default="$4"
 143         local _loctmp
 144         [ -z "$default" ] && default="0"
 145         config_get_bool _loctmp "$section" "$option" "$default"
 146         [ $_loctmp -gt 0 ] && xappend "$value"
 147 }
 148
 149 append_parm() {
 150         local section="$1"
 151         local option="$2"
 152         local switch="$3"
 153         local default="$4"
 154         local _loctmp
 155         config_get _loctmp "$section" "$option" "$default"
 156         [ -z "$_loctmp" ] && return 0
 157         xappend "$switch=$_loctmp"
 158 }
 159
 160 append_server() {
 161         xappend "--server=$1"
 162 }
 163
 164 append_rev_server() {
 165         xappend "--rev-server=$1"
 166 }
 167
 168 append_address() {
 169         xappend "--address=$1"
 170 }
 171
 172 append_ipset() {
 173         xappend "--ipset=$1"
 174 }
 175
 176 append_connmark_allowlist() {
 177         xappend "--connmark-allowlist=$1"
 178 }
 179
 180 append_interface() {
 181         network_get_device ifname "$1" || ifname="$1"
 182         xappend "--interface=$ifname"
 183 }
 184
 185 append_listenaddress() {
 186         xappend "--listen-address=$1"
 187 }
 188
 189 append_notinterface() {
 190         network_get_device ifname "$1" || ifname="$1"
 191         xappend "--except-interface=$ifname"
 192 }
 193
 194 ismounted() {
 195         local filename="$1"
 196         local dirname
 197         for dirname in $EXTRA_MOUNT ; do
 198                 case "$filename" in
 199                         "${dirname}/"* | "${dirname}" )
 200                                 return 1
 201                                 ;;
 202                 esac
 203         done
 204
 205         return 0
 206 }
 207
 208 append_addnhosts() {
 209         ismounted "$1" || append EXTRA_MOUNT "$1"
 210         xappend "--addn-hosts=$1"
 211 }
 212
 213 append_bogusnxdomain() {
 214         xappend "--bogus-nxdomain=$1"
 215 }
 216
 217 append_pxe_service() {
 218         xappend "--pxe-service=$1"
 219 }
 220
 221 append_interface_name() {
 222         xappend "--interface-name=$1,$2"
 223 }
 224
 225 filter_dnsmasq() {
 226         local cfg="$1" func="$2" match_cfg="$3" found_cfg
 227
 228         # use entry when no instance entry set, or if it matches
 229         config_get found_cfg "$cfg" "instance"
 230         if [ -z "$found_cfg" ] || [ "$found_cfg" = "$match_cfg" ]; then
 231                 $func $cfg
 232         fi
 233 }
 234
 235 dhcp_subscrid_add() {
 236         local cfg="$1"
 237
 238         config_get networkid "$cfg" networkid
 239         [ -n "$networkid" ] || return 0
 240
 241         config_get subscriberid "$cfg" subscriberid
 242         [ -n "$subscriberid" ] || return 0
 243
 244         xappend "--dhcp-subscrid=set:$networkid,$subscriberid"
 245
 246         config_get_bool force "$cfg" force 0
 247
 248         dhcp_option_add "$cfg" "$networkid" "$force"
 249 }
 250
 251 dhcp_remoteid_add() {
 252         local cfg="$1"
 253
 254         config_get networkid "$cfg" networkid
 255         [ -n "$networkid" ] || return 0
 256
 257         config_get remoteid "$cfg" remoteid
 258         [ -n "$remoteid" ] || return 0
 259
 260         xappend "--dhcp-remoteid=set:$networkid,$remoteid"
 261
 262         config_get_bool force "$cfg" force 0
 263
 264         dhcp_option_add "$cfg" "$networkid" "$force"
 265 }
 266
 267 dhcp_circuitid_add() {
 268         # TODO: DHCPV6 does not have circuitid; catch "option6:"
 269         local cfg="$1"
 270
 271         config_get networkid "$cfg" networkid
 272         [ -n "$networkid" ] || return 0
 273
 274         config_get circuitid "$cfg" circuitid
 275         [ -n "$circuitid" ] || return 0
 276
 277         xappend "--dhcp-circuitid=set:$networkid,$circuitid"
 278
 279         config_get_bool force "$cfg" force 0
 280
 281         dhcp_option_add "$cfg" "$networkid" "$force"
 282 }
 283
 284 dhcp_userclass_add() {
 285         local cfg="$1"
 286
 287         config_get networkid "$cfg" networkid
 288         [ -n "$networkid" ] || return 0
 289
 290         config_get userclass "$cfg" userclass
 291         [ -n "$userclass" ] || return 0
 292
 293         xappend "--dhcp-userclass=set:$networkid,$userclass"
 294
 295         config_get_bool force "$cfg" force 0
 296
 297         dhcp_option_add "$cfg" "$networkid" "$force"
 298 }
 299
 300 dhcp_vendorclass_add() {
 301         # TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
 302         local cfg="$1"
 303
 304         config_get networkid "$cfg" networkid
 305         [ -n "$networkid" ] || return 0
 306
 307         config_get vendorclass "$cfg" vendorclass
 308         [ -n "$vendorclass" ] || return 0
 309
 310         xappend "--dhcp-vendorclass=set:$networkid,$vendorclass"
 311
 312         config_get_bool force "$cfg" force 0
 313
 314         dhcp_option_add "$cfg" "$networkid" "$force"
 315 }
 316
 317 dhcp_match_add() {
 318         local cfg="$1"
 319
 320         config_get networkid "$cfg" networkid
 321         [ -n "$networkid" ] || return 0
 322
 323         config_get match "$cfg" match
 324         [ -n "$match" ] || return 0
 325
 326         xappend "--dhcp-match=set:$networkid,$match"
 327
 328         config_get_bool force "$cfg" force 0
 329
 330         dhcp_option_add "$cfg" "$networkid" "$force"
 331 }
 332
 333 dhcp_host_add() {
 334         local cfg="$1"
 335         local hosttag nametime addrs duids macs tags
 336
 337         config_get_bool force "$cfg" force 0
 338
 339         config_get networkid "$cfg" networkid
 340         [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
 341
 342         config_get_bool enable "$cfg" enable 1
 343         [ "$enable" = "0" ] && return 0
 344
 345         config_get name "$cfg" name
 346         config_get ip "$cfg" ip
 347         config_get hostid "$cfg" hostid
 348
 349         [ -z "$ip" ] && [ -z "$name" ] && [ -z "$hostid" ] && return 0
 350
 351         config_get_bool dns "$cfg" dns 0
 352         [ "$dns" = "1" ] && [ -n "$ip" ] && [ -n "$name" ] && {
 353                 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE_TMP
 354         }
 355
 356         config_get mac "$cfg" mac
 357         config_get duid "$cfg" duid
 358         config_get tag "$cfg" tag
 359
 360         if [ -n "$mac" ]; then
 361                 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
 362                 # many MAC are possible to track a laptop ON/OFF dock
 363                 for m in $mac; do append macs "$m" ","; done
 364         fi
 365
 366         if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ -n "$duid" ]; then
 367                 # --dhcp-host=id:00:03:00:01:12:00:00:01:02:03,[::beef],lap
 368                 # one (virtual) machine gets one DUID per RFC3315
 369                 duids="id:${duid// */}"
 370         fi
 371
 372         if [ -z "$macs" ] && [ -z "$duids" ]; then
 373                 # --dhcp-host=lap,192.168.0.199,[::beef]
 374                 [ -n "$name" ] || return 0
 375                 macs="$name"
 376                 name=""
 377         fi
 378
 379         if [ -n "$hostid" ]; then
 380                 hex_to_hostid hostid "$hostid"
 381         fi
 382
 383         if [ -n "$tag" ]; then
 384                 for t in $tag; do append tags "$t" ",set:"; done
 385         fi
 386
 387         config_get_bool broadcast "$cfg" broadcast 0
 388         config_get leasetime "$cfg" leasetime
 389
 390         [ "$broadcast" = "0" ] && broadcast= || broadcast=",set:needs-broadcast"
 391
 392         hosttag="${networkid:+,set:${networkid}}${tags:+,set:${tags}}$broadcast"
 393         nametime="${name:+,$name}${leasetime:+,$leasetime}"
 394
 395         if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
 396                 addrs="${ip:+,$ip}${hostid:+,[::$hostid]}"
 397                 xappend "--dhcp-host=$macs${duids:+,$duids}$hosttag$addrs$nametime"
 398         else
 399                 xappend "--dhcp-host=$macs$hosttag${ip:+,$ip}$nametime"
 400         fi
 401 }
 402
 403 dhcp_this_host_add() {
 404         local net="$1"
 405         local ifname="$2"
 406         local mode="$3"
 407         local routerstub routername ifdashname
 408         local lanaddr lanaddr6 lanaddrs6 ulaprefix
 409
 410         if [ "$mode" -gt 0 ] ; then
 411                 ifdashname="${ifname//./-}"
 412                 routerstub="$( md5sum /etc/os-release )"
 413                 routerstub="router-${routerstub// */}"
 414                 routername="$( uci_get system @system[0] hostname $routerstub )"
 415
 416                 if [ "$mode" -gt 1 ] ; then
 417                         if [ "$mode" -gt 2 ] ; then
 418                                 if [ "$mode" -gt 3 ] ; then
 419                                         append_interface_name "$ifdashname.$routername.$DOMAIN" "$ifname"
 420                                 fi
 421
 422                                 append_interface_name "$routername.$DOMAIN" "$ifname"
 423                         fi
 424
 425                         # All IP addresses discovered by dnsmasq will be labeled (except fe80::)
 426                         append_interface_name "$routername" "$ifname"
 427
 428                 else
 429                         # This uses a static host file entry for only limited addresses.
 430                         # Use dnsmasq option "--expandhosts" to enable FQDN on host files.
 431                         ulaprefix="$(uci_get network @globals[0] ula_prefix)"
 432                         network_get_ipaddr lanaddr "$net"
 433                         network_get_ipaddrs6 lanaddrs6 "$net"
 434
 435                         if [ -n "$lanaddr" ] ; then
 436                                 dhcp_domain_add "" "$routername" "$lanaddr"
 437                         fi
 438
 439                         if [ -n "$ulaprefix" ] && [ -n "$lanaddrs6" ] ; then
 440                                 for lanaddr6 in $lanaddrs6 ; do
 441                                         case "$lanaddr6" in
 442                                         "${ulaprefix%%:/*}"*)
 443                                                 dhcp_domain_add "" "$routername" "$lanaddr6"
 444                                                 ;;
 445                                         esac
 446                                 done
 447                         fi
 448                 fi
 449         fi
 450 }
 451
 452 dhcp_tag_add() {
 453         # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
 454         local cfg="$1"
 455
 456         tag="$cfg"
 457
 458         [ -n "$tag" ] || return 0
 459
 460         config_get_bool force "$cfg" force 0
 461         [ "$force" = "0" ] && force=
 462
 463         config_get option "$cfg" dhcp_option
 464         for o in $option; do
 465                 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
 466         done
 467 }
 468
 469 dhcp_mac_add() {
 470         local cfg="$1"
 471
 472         config_get networkid "$cfg" networkid
 473         [ -n "$networkid" ] || return 0
 474
 475         config_get mac "$cfg" mac
 476         [ -n "$mac" ] || return 0
 477
 478         xappend "--dhcp-mac=$networkid,$mac"
 479
 480         dhcp_option_add "$cfg" "$networkid"
 481 }
 482
 483 dhcp_boot_add() {
 484         # TODO: BOOTURL is different between DHCPv4 and DHCPv6
 485         local cfg="$1"
 486
 487         config_get networkid "$cfg" networkid
 488
 489         config_get filename "$cfg" filename
 490         [ -n "$filename" ] || return 0
 491
 492         config_get servername "$cfg" servername
 493         config_get serveraddress "$cfg" serveraddress
 494
 495         [ -n "$serveraddress" ] && [ ! -n "$servername" ] && return 0
 496
 497         xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
 498
 499         config_get_bool force "$cfg" force 0
 500
 501         dhcp_option_add "$cfg" "$networkid" "$force"
 502 }
 503
 504
 505 dhcp_add() {
 506         local cfg="$1"
 507         local dhcp6range="::"
 508         local nettag
 509         local tags
 510
 511         config_get net "$cfg" interface
 512         [ -n "$net" ] || return 0
 513
 514         config_get networkid "$cfg" networkid
 515         [ -n "$networkid" ] || networkid="$net"
 516
 517         network_get_device ifname "$net" || return 0
 518
 519         [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
 520                 DNS_SERVERS="$DNS_SERVERS $dnsserver"
 521         }
 522
 523         append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && {
 524                 # Many ISP do not have useful names for DHCP customers (your WAN).
 525                 dhcp_this_host_add "$net" "$ifname" "$ADD_WAN_FQDN"
 526                 return 0
 527         }
 528
 529         network_get_subnet subnet "$net" || return 0
 530         network_get_protocol proto "$net" || return 0
 531
 532         # Do not support non-static interfaces for now
 533         [ static = "$proto" ] || return 0
 534
 535         # Override interface netmask with dhcp config if applicable
 536         config_get netmask "$cfg" netmask "${subnet##*/}"
 537
 538         #check for an already active dhcp server on the interface, unless 'force' is set
 539         config_get_bool force "$cfg" force 0
 540         [ $force -gt 0 ] || dhcp_check "$ifname" || {
 541                 logger -t dnsmasq \
 542                         "found already running DHCP-server on interface '$ifname'" \
 543                         "refusing to start, use 'option force 1' to override"
 544                 return 0
 545         }
 546
 547         config_get start "$cfg" start 100
 548         config_get limit "$cfg" limit 150
 549         config_get leasetime "$cfg" leasetime 12h
 550         config_get options "$cfg" options
 551         config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
 552
 553         config_get dhcpv4 "$cfg" dhcpv4
 554         config_get dhcpv6 "$cfg" dhcpv6
 555
 556         config_get ra "$cfg" ra
 557         config_get ra_management "$cfg" ra_management
 558         config_get ra_preference "$cfg" ra_preference
 559         config_get dns "$cfg" dns
 560
 561         config_list_foreach "$cfg" "interface_name" append_interface_name "$ifname"
 562
 563         # Put the router host name on this DHCP served interface address(es)
 564         dhcp_this_host_add "$net" "$ifname" "$ADD_LOCAL_FQDN"
 565
 566         start="$( dhcp_calc "$start" )"
 567
 568         add_tag() {
 569                 tags="${tags}tag:$1,"
 570         }
 571         config_list_foreach "$cfg" tag add_tag
 572
 573         nettag="${networkid:+set:${networkid},}"
 574
 575         if [ "$limit" -gt 0 ] ; then
 576                 limit=$((limit-1))
 577         fi
 578
 579         eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
 580
 581         if [ "$dynamicdhcp" = "0" ] ; then
 582                 END="static"
 583                 dhcp6range="::,static"
 584         else
 585                 dhcp6range="::1000,::ffff"
 586         fi
 587
 588
 589         if [ "$dhcpv4" != "disabled" ] ; then
 590                 xappend "--dhcp-range=$tags$nettag$START,$END,$NETMASK,$leasetime${options:+ $options}"
 591         fi
 592
 593
 594         if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ "$ra" = "server" ] ; then
 595                 # Note: dnsmasq cannot just be a DHCPv6 server (all-in-1)
 596                 # and let some other machine(s) send RA pointing to it.
 597
 598                 case $ra_preference in
 599                 *high*)
 600                         xappend "--ra-param=$ifname,high,0,7200"
 601                         ;;
 602                 *low*)
 603                         xappend "--ra-param=$ifname,low,0,7200"
 604                         ;;
 605                 *)
 606                         # Send UNSOLICITED RA at default interval and live for 2 hours.
 607                         # TODO: convert flexible lease time into route life time (only seconds).
 608                         xappend "--ra-param=$ifname,0,7200"
 609                         ;;
 610                 esac
 611
 612                 if [ "$dhcpv6" = "disabled" ] ; then
 613                         ra_management="3"
 614                 fi
 615
 616
 617                 case $ra_management in
 618                 0)
 619                         # SLACC with DCHP for extended options
 620                         xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-stateless,ra-names"
 621                         ;;
 622                 2)
 623                         # DHCP address and RA only for management redirection
 624                         xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,$leasetime"
 625                         ;;
 626                 3)
 627                         # SLAAC only but dnsmasq attempts to link HOSTNAME, DHCPv4 MAC, and SLAAC
 628                         xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-only,ra-names"
 629                         ;;
 630                 *)
 631                         # SLAAC and full DHCP
 632                         xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,slaac,ra-names,$leasetime"
 633                         ;;
 634                 esac
 635
 636                 if [ -n "$dns" ]; then
 637                         dnss=""
 638                         for d in $dns; do append dnss "[$d]" ","; done
 639                 else
 640                         dnss="[::]"
 641                 fi
 642
 643                 dhcp_option_append "option6:dns-server,$dnss" "$networkid"
 644         fi
 645
 646         dhcp_option_add "$cfg" "$networkid" 0
 647         dhcp_option_add "$cfg" "$networkid" 2
 648 }
 649
 650 dhcp_option_append() {
 651         local option="$1"
 652         local networkid="$2"
 653         local force="$3"
 654
 655         xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$option"
 656 }
 657
 658 dhcp_option_add() {
 659         # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
 660         local cfg="$1"
 661         local networkid="$2"
 662         local force="$3"
 663         local opt="dhcp_option"
 664
 665         [ "$force" = "0" ] && force=
 666         [ "$force" = "2" ] && opt="dhcp_option_force"
 667
 668         local list_len
 669         config_get list_len "$cfg" "${opt}_LENGTH"
 670
 671         if [ -n "$list_len" ]; then
 672                 config_list_foreach "$cfg" "$opt" dhcp_option_append "$networkid" "$force"
 673         else
 674                 config_get dhcp_option "$cfg" "$opt"
 675
 676                 [ -n "$dhcp_option" ] && echo "Warning: the 'option $opt' syntax is deprecated, use 'list $opt'" >&2
 677
 678                 local option
 679                 for option in $dhcp_option; do
 680                         dhcp_option_append "$option" "$networkid" "$force"
 681                 done
 682         fi
 683 }
 684
 685 dhcp_domain_add() {
 686         local cfg="$1"
 687         local ip name names record
 688
 689         config_get names "$cfg" name "$2"
 690         [ -n "$names" ] || return 0
 691
 692         config_get ip "$cfg" ip "$3"
 693         [ -n "$ip" ] || return 0
 694
 695         for name in $names; do
 696                 record="${record:+$record }$name"
 697         done
 698
 699         echo "$ip $record" >> $HOSTFILE_TMP
 700 }
 701
 702 dhcp_srv_add() {
 703         local cfg="$1"
 704
 705         config_get srv "$cfg" srv
 706         [ -n "$srv" ] || return 0
 707
 708         config_get target "$cfg" target
 709         [ -n "$target" ] || return 0
 710
 711         config_get port "$cfg" port
 712         [ -n "$port" ] || return 0
 713
 714         config_get class "$cfg" class
 715         config_get weight "$cfg" weight
 716
 717         local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
 718
 719         xappend "--srv-host=$service"
 720 }
 721
 722 dhcp_mx_add() {
 723         local cfg="$1"
 724         local domain relay pref
 725
 726         config_get domain "$cfg" domain
 727         [ -n "$domain" ] || return 0
 728
 729         config_get relay "$cfg" relay
 730         [ -n "$relay" ] || return 0
 731
 732         config_get pref "$cfg" pref 0
 733
 734         local service="$domain,$relay,$pref"
 735
 736         xappend "--mx-host=$service"
 737 }
 738
 739 dhcp_cname_add() {
 740         local cfg="$1"
 741         local cname target
 742
 743         config_get cname "$cfg" cname
 744         [ -n "$cname" ] || return 0
 745
 746         config_get target "$cfg" target
 747         [ -n "$target" ] || return 0
 748
 749         xappend "--cname=${cname},${target}"
 750 }
 751
 752 dhcp_hostrecord_add() {
 753         local cfg="$1"
 754         local names addresses record val
 755
 756         config_get names "$cfg" name "$2"
 757         if [ -z "$names" ]; then
 758                 return 0
 759         fi
 760
 761         config_get addresses "$cfg" ip "$3"
 762         if [ -z "$addresses" ]; then
 763                 return 0
 764         fi
 765
 766         for val in $names $addresses; do
 767                 record="${record:+$record,}$val"
 768         done
 769
 770         xappend "--host-record=$record"
 771 }
 772
 773 dhcp_relay_add() {
 774         local cfg="$1"
 775         local local_addr server_addr interface
 776
 777         config_get local_addr "$cfg" local_addr
 778         [ -n "$local_addr" ] || return 0
 779
 780         config_get server_addr "$cfg" server_addr
 781         [ -n "$server_addr" ] || return 0
 782
 783         config_get interface "$cfg" interface
 784         if [ -z "$interface" ]; then
 785                 xappend "--dhcp-relay=$local_addr,$server_addr"
 786         else
 787                 network_get_device ifname "$interface" || return
 788                 xappend "--dhcp-relay=$local_addr,$server_addr,$ifname"
 789         fi
 790 }
 791
 792 dnsmasq_ipset_add() {
 793         local cfg="$1"
 794         local ipsets domains
 795
 796         add_ipset() {
 797                 ipsets="${ipsets:+$ipsets,}$1"
 798         }
 799
 800         add_domain() {
 801                 # leading '/' is expected
 802                 domains="$domains/$1"
 803         }
 804
 805         config_list_foreach "$cfg" "name" add_ipset
 806         config_list_foreach "$cfg" "domain" add_domain
 807
 808         if [ -z "$ipsets" ] || [ -z "$domains" ]; then
 809                 return 0
 810         fi
 811
 812         xappend "--ipset=$domains/$ipsets"
 813 }
 814
 815 dnsmasq_start()
 816 {
 817         local cfg="$1"
 818         local disabled user_dhcpscript
 819         local resolvfile resolvdir localuse=0
 820
 821         config_get_bool disabled "$cfg" disabled 0
 822         [ "$disabled" -gt 0 ] && return 0
 823
 824         # reset list of DOMAINS, DNS servers and EXTRA mounts (for each dnsmasq instance)
 825         DNS_SERVERS=""
 826         DOMAIN=""
 827         EXTRA_MOUNT=""
 828         CONFIGFILE="${BASECONFIGFILE}.${cfg}"
 829         CONFIGFILE_TMP="${CONFIGFILE}.$$"
 830         HOSTFILE="${BASEHOSTFILE}.${cfg}"
 831         HOSTFILE_TMP="${HOSTFILE}.$$"
 832         HOSTFILE_DIR="$(dirname "$HOSTFILE")"
 833         BASEDHCPSTAMPFILE_CFG="${BASEDHCPSTAMPFILE}.${cfg}"
 834
 835         # before we can call xappend
 836         umask u=rwx,g=rx,o=rx
 837         mkdir -p /var/run/dnsmasq/
 838         mkdir -p $(dirname $CONFIGFILE)
 839         mkdir -p "$HOSTFILE_DIR"
 840         mkdir -p /var/lib/misc
 841         chown dnsmasq:dnsmasq /var/run/dnsmasq
 842
 843         echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
 844         echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE_TMP
 845
 846         local dnsmasqconffile="/etc/dnsmasq.${cfg}.conf"
 847         if [ ! -r "$dnsmasqconffile" ]; then
 848                 dnsmasqconffile=/etc/dnsmasq.conf
 849         fi
 850
 851         # if we did this last, we could override auto-generated config
 852         [ -f "${dnsmasqconffile}" ] && {
 853                 xappend "--conf-file=${dnsmasqconffile}"
 854         }
 855
 856         $PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
 857
 858
 859         if [ -x /usr/sbin/odhcpd ] && [ -x /etc/init.d/odhcpd ] ; then
 860                 local odhcpd_is_main odhcpd_is_enabled
 861                 config_get odhcpd_is_main odhcpd maindhcp 0
 862                 /etc/init.d/odhcpd enabled && odhcpd_is_enabled=1 || odhcpd_is_enabled=0
 863
 864
 865                 if [ "$odhcpd_is_enabled" -eq 0 ] && [ "$DHCPv6CAPABLE" -eq 1 ] ; then
 866                         # DHCP V4 and V6 in DNSMASQ
 867                         DNSMASQ_DHCP_VER=6
 868                 elif [ "$odhcpd_is_main" -gt 0 ] ; then
 869                         # ODHCPD is doing it all
 870                         DNSMASQ_DHCP_VER=0
 871                 else
 872                         # You have ODHCPD but use DNSMASQ for DHCPV4
 873                         DNSMASQ_DHCP_VER=4
 874                 fi
 875
 876         elif [ "$DHCPv6CAPABLE" -eq 1 ] ; then
 877                 # DHCP V4 and V6 in DNSMASQ
 878                 DNSMASQ_DHCP_VER=6
 879         else
 880                 DNSMASQ_DHCP_VER=4
 881         fi
 882
 883         # Allow DHCP/DHCPv6 to be handled by ISC DHCPD
 884         if [ -x /usr/sbin/dhcpd ] ; then
 885                 if [ -x /etc/init.d/dhcpd ] ; then
 886                         /etc/init.d/dhcpd enabled && DNSMASQ_DHCP_VER=0
 887                 fi
 888                 if [ -x /etc/init.d/dhcpd6 ] && [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
 889                         /etc/init.d/dhcpd6 enabled && DNSMASQ_DHCP_VER=4
 890                 fi
 891         fi
 892
 893         append_bool "$cfg" authoritative "--dhcp-authoritative"
 894         append_bool "$cfg" nodaemon "--no-daemon"
 895         append_bool "$cfg" domainneeded "--domain-needed"
 896         append_bool "$cfg" filterwin2k "--filterwin2k"
 897         append_bool "$cfg" nohosts "--no-hosts"
 898         append_bool "$cfg" nonegcache "--no-negcache"
 899         append_bool "$cfg" strictorder "--strict-order"
 900         append_bool "$cfg" logqueries "--log-queries=extra"
 901         append_bool "$cfg" noresolv "--no-resolv"
 902         append_bool "$cfg" localise_queries "--localise-queries"
 903         append_bool "$cfg" readethers "--read-ethers"
 904
 905         local instance_name="dnsmasq.$cfg"
 906         if [ "$cfg" = "$DEFAULT_INSTANCE" ]; then
 907                 instance_name="dnsmasq"
 908         fi
 909         config_get_bool dbus "$cfg" "dbus" 0
 910         [ $dbus -gt 0 ] && xappend "--enable-dbus=uk.org.thekelleys.$instance_name"
 911         config_get_bool ubus "$cfg" "ubus" 1
 912         [ $ubus -gt 0 ] && xappend "--enable-ubus=$instance_name"
 913
 914         append_bool "$cfg" expandhosts "--expand-hosts"
 915         config_get tftp_root "$cfg" "tftp_root"
 916         [ -n "$tftp_root" ] && mkdir -p "$tftp_root" && append_bool "$cfg" enable_tftp "--enable-tftp"
 917         append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
 918         append_bool "$cfg" nonwildcard "--bind-dynamic" 1
 919         append_bool "$cfg" fqdn "--dhcp-fqdn"
 920         append_bool "$cfg" proxydnssec "--proxy-dnssec"
 921         append_bool "$cfg" localservice "--local-service"
 922         append_bool "$cfg" logdhcp "--log-dhcp"
 923         append_bool "$cfg" quietdhcp "--quiet-dhcp"
 924         append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
 925         append_bool "$cfg" allservers "--all-servers"
 926         append_bool "$cfg" noping "--no-ping"
 927         append_bool "$cfg" rapidcommit "--dhcp-rapid-commit"
 928         append_bool "$cfg" scriptarp "--script-arp"
 929
 930         append_parm "$cfg" logfacility "--log-facility"
 931
 932         append_parm "$cfg" cachesize "--cache-size"
 933         append_parm "$cfg" dnsforwardmax "--dns-forward-max"
 934         append_parm "$cfg" port "--port"
 935         append_parm "$cfg" ednspacket_max "--edns-packet-max"
 936         append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
 937         append_parm "$cfg" "queryport" "--query-port"
 938         append_parm "$cfg" "minport" "--min-port"
 939         append_parm "$cfg" "maxport" "--max-port"
 940         append_parm "$cfg" "domain" "--domain"
 941         append_parm "$cfg" "local" "--local"
 942         config_list_foreach "$cfg" "listen_address" append_listenaddress
 943         config_list_foreach "$cfg" "server" append_server
 944         config_list_foreach "$cfg" "rev_server" append_rev_server
 945         config_list_foreach "$cfg" "address" append_address
 946         config_list_foreach "$cfg" "ipset" append_ipset
 947
 948         local connmark_allowlist_enable
 949         config_get connmark_allowlist_enable "$cfg" connmark_allowlist_enable 0
 950         [ "$connmark_allowlist_enable" -gt 0 ] && {
 951                 append_parm "$cfg" "connmark_allowlist_enable" "--connmark-allowlist-enable"
 952                 config_list_foreach "$cfg" "connmark_allowlist" append_connmark_allowlist
 953         }
 954
 955         [ -n "$BOOT" ] || {
 956                 config_list_foreach "$cfg" "interface" append_interface
 957                 config_list_foreach "$cfg" "notinterface" append_notinterface
 958         }
 959         config_get_bool ignore_hosts_dir "$cfg" ignore_hosts_dir 0
 960         if [ "$ignore_hosts_dir" = "1" ]; then
 961                 xappend "--addn-hosts=$HOSTFILE"
 962                 append EXTRA_MOUNT "$HOSTFILE"
 963         else
 964                 xappend "--addn-hosts=$HOSTFILE_DIR"
 965                 append EXTRA_MOUNT "$HOSTFILE_DIR"
 966         fi
 967         config_list_foreach "$cfg" "addnhosts" append_addnhosts
 968         config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
 969         append_parm "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
 970         append_parm "$cfg" "serversfile" "--servers-file"
 971         append_parm "$cfg" "tftp_root" "--tftp-root"
 972         append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
 973         append_parm "$cfg" "local_ttl" "--local-ttl"
 974         append_parm "$cfg" "max_ttl" "--max-ttl"
 975         append_parm "$cfg" "min_cache_ttl" "--min-cache-ttl"
 976         append_parm "$cfg" "max_cache_ttl" "--max-cache-ttl"
 977         append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
 978         append_parm "$cfg" "tftp_unique_root" "--tftp-unique-root"
 979         config_list_foreach "$cfg" "pxe_service" append_pxe_service
 980         config_get DOMAIN "$cfg" domain
 981
 982         config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
 983         config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
 984         config_get ADD_LOCAL_FQDN "$cfg" add_local_fqdn ""
 985         config_get ADD_WAN_FQDN "$cfg" add_wan_fqdn 0
 986
 987         if [ -z "$ADD_LOCAL_FQDN" ] ; then
 988                 # maintain support for previous UCI
 989                 ADD_LOCAL_FQDN="$ADD_LOCAL_HOSTNAME"
 990         fi
 991
 992         config_get user_dhcpscript $cfg dhcpscript
 993         if has_handler || [ -n "$user_dhcpscript" ]; then
 994                 xappend "--dhcp-script=$DHCPSCRIPT"
 995                 xappend "--script-arp"
 996         fi
 997
 998         config_get leasefile $cfg leasefile "/tmp/dhcp.leases"
 999         [ -n "$leasefile" ] && [ ! -e "$leasefile" ] && touch "$leasefile"
1000         config_get_bool cachelocal "$cfg" cachelocal 1
1001
1002         config_get_bool noresolv "$cfg" noresolv 0
1003         if [ "$noresolv" != "1" ]; then
1004                 config_get resolvfile "$cfg" resolvfile /tmp/resolv.conf.d/resolv.conf.auto
1005                 [ -n "$resolvfile" ] && [ ! -e "$resolvfile" ] && touch "$resolvfile"
1006                 xappend "--resolv-file=$resolvfile"
1007                 [ "$resolvfile" = "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=1
1008                 resolvdir="$(dirname "$resolvfile")"
1009         fi
1010         config_get_bool localuse "$cfg" localuse "$localuse"
1011
1012         config_get hostsfile "$cfg" dhcphostsfile
1013         [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
1014
1015         local rebind
1016         config_get_bool rebind "$cfg" rebind_protection 1
1017         [ $rebind -gt 0 ] && {
1018                 log_once \
1019                         "DNS rebinding protection is active," \
1020                         "will discard upstream RFC1918 responses!"
1021                 xappend "--stop-dns-rebind"
1022
1023                 local rebind_localhost
1024                 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
1025                 [ $rebind_localhost -gt 0 ] && {
1026                         log_once "Allowing 127.0.0.0/8 responses"
1027                         xappend "--rebind-localhost-ok"
1028                 }
1029
1030                 append_rebind_domain() {
1031                         log_once "Allowing RFC1918 responses for domain $1"
1032                         xappend "--rebind-domain-ok=$1"
1033                 }
1034
1035                 config_list_foreach "$cfg" rebind_domain append_rebind_domain
1036         }
1037
1038         config_get_bool dnssec "$cfg" dnssec 0
1039         [ "$dnssec" -gt 0 ] && {
1040                 xappend "--conf-file=$TRUSTANCHORSFILE"
1041                 xappend "--dnssec"
1042                 [ -x /etc/init.d/sysntpd ] && {
1043                         if /etc/init.d/sysntpd enabled || [ "$(uci_get system.ntp.enabled)" = "1" ] ; then
1044                                 [ -f "$TIMEVALIDFILE" ] || xappend "--dnssec-no-timecheck"
1045                         fi
1046                 }
1047                 config_get_bool dnsseccheckunsigned "$cfg" dnsseccheckunsigned 1
1048                 [ "$dnsseccheckunsigned" -eq 0 ] && xappend "--dnssec-check-unsigned=no"
1049         }
1050
1051         config_get addmac "$cfg" addmac 0
1052         [ "$addmac" != "0" ] && {
1053                 [ "$addmac" = "1" ] && addmac=
1054                 xappend "--add-mac${addmac:+="$addmac"}"
1055         }
1056
1057         dhcp_option_add "$cfg" "" 0
1058         dhcp_option_add "$cfg" "" 2
1059
1060         xappend "--dhcp-broadcast=tag:needs-broadcast"
1061
1062
1063         config_get dnsmasqconfdir "$cfg" confdir "/tmp/dnsmasq.d"
1064         xappend "--conf-dir=$dnsmasqconfdir"
1065         dnsmasqconfdir="${dnsmasqconfdir%%,*}"
1066         [ ! -d "$dnsmasqconfdir" ] && mkdir -p $dnsmasqconfdir
1067         xappend "--user=dnsmasq"
1068         xappend "--group=dnsmasq"
1069         echo >> $CONFIGFILE_TMP
1070
1071         config_get_bool enable_tftp "$cfg" enable_tftp 0
1072         [ "$enable_tftp" -gt 0 ] && {
1073                 config_get tftp_root "$cfg" tftp_root
1074                 append EXTRA_MOUNT $tftp_root
1075         }
1076
1077         config_foreach filter_dnsmasq host dhcp_host_add "$cfg"
1078         echo >> $CONFIGFILE_TMP
1079
1080         config_get_bool dhcpbogushostname "$cfg" dhcpbogushostname 1
1081         [ "$dhcpbogushostname" -gt 0 ] && {
1082                 xappend "--dhcp-ignore-names=tag:dhcp_bogus_hostname"
1083                 [ -r "$DHCPBOGUSHOSTNAMEFILE" ] && xappend "--conf-file=$DHCPBOGUSHOSTNAMEFILE"
1084         }
1085
1086         config_foreach filter_dnsmasq boot dhcp_boot_add "$cfg"
1087         config_foreach filter_dnsmasq mac dhcp_mac_add "$cfg"
1088         config_foreach filter_dnsmasq tag dhcp_tag_add "$cfg"
1089         config_foreach filter_dnsmasq vendorclass dhcp_vendorclass_add "$cfg"
1090         config_foreach filter_dnsmasq userclass dhcp_userclass_add "$cfg"
1091         config_foreach filter_dnsmasq circuitid dhcp_circuitid_add "$cfg"
1092         config_foreach filter_dnsmasq remoteid dhcp_remoteid_add "$cfg"
1093         config_foreach filter_dnsmasq subscrid dhcp_subscrid_add "$cfg"
1094         config_foreach filter_dnsmasq match dhcp_match_add "$cfg"
1095         config_foreach filter_dnsmasq domain dhcp_domain_add "$cfg"
1096         config_foreach filter_dnsmasq hostrecord dhcp_hostrecord_add "$cfg"
1097         [ -n "$BOOT" ] || config_foreach filter_dnsmasq relay dhcp_relay_add "$cfg"
1098
1099         echo >> $CONFIGFILE_TMP
1100         config_foreach filter_dnsmasq srvhost dhcp_srv_add "$cfg"
1101         config_foreach filter_dnsmasq mxhost dhcp_mx_add "$cfg"
1102         echo >> $CONFIGFILE_TMP
1103
1104         config_get_bool boguspriv "$cfg" boguspriv 1
1105         [ "$boguspriv" -gt 0 ] && {
1106                 xappend "--bogus-priv"
1107                 [ -r "$RFC6761FILE" ] && xappend "--conf-file=$RFC6761FILE"
1108         }
1109
1110         if [ "$DNSMASQ_DHCP_VER" -gt 4 ] ; then
1111                 # Enable RA feature for when/if it is constructed,
1112                 # and RA is selected per interface pool (RA, DHCP, or both),
1113                 # but no one (should) want RA broadcast in syslog
1114                 [ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
1115                 xappend "--enable-ra"
1116                 xappend "--quiet-ra"
1117                 append_bool "$cfg" quietdhcp "--quiet-dhcp6"
1118
1119         elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
1120                 [ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
1121         fi
1122
1123
1124         echo >> $CONFIGFILE_TMP
1125         config_foreach filter_dnsmasq cname dhcp_cname_add "$cfg"
1126         echo >> $CONFIGFILE_TMP
1127
1128         echo >> $CONFIGFILE_TMP
1129         config_foreach filter_dnsmasq ipset dnsmasq_ipset_add "$cfg"
1130         echo >> $CONFIGFILE_TMP
1131
1132         echo >> $CONFIGFILE_TMP
1133         mv -f $CONFIGFILE_TMP $CONFIGFILE
1134         mv -f $HOSTFILE_TMP $HOSTFILE
1135
1136         [ "$localuse" -gt 0 ] && {
1137                 rm -f /tmp/resolv.conf
1138                 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
1139                         echo "search $DOMAIN" >> /tmp/resolv.conf
1140                 }
1141                 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
1142                 [ -e /proc/sys/net/ipv6 ] && DNS_SERVERS="$DNS_SERVERS ::1"
1143                 for DNS_SERVER in $DNS_SERVERS ; do
1144                         echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
1145                 done
1146         }
1147
1148         procd_open_instance $cfg
1149         procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq."${cfg}".pid
1150         procd_set_param file $CONFIGFILE
1151         [ -n "$user_dhcpscript" ] && procd_set_param env USER_DHCPSCRIPT="$user_dhcpscript"
1152         procd_set_param respawn
1153
1154         procd_add_jail dnsmasq ubus log
1155         procd_add_jail_mount $CONFIGFILE $DHCPBOGUSHOSTNAMEFILE $DHCPSCRIPT $DHCPSCRIPT_DEPENDS
1156         procd_add_jail_mount $EXTRA_MOUNT $RFC6761FILE $TRUSTANCHORSFILE
1157         procd_add_jail_mount $dnsmasqconffile $dnsmasqconfdir $resolvdir $user_dhcpscript
1158         procd_add_jail_mount /etc/passwd /etc/group /etc/TZ /etc/hosts /etc/ethers
1159         procd_add_jail_mount_rw /var/run/dnsmasq/ $leasefile
1160
1161         procd_close_instance
1162 }
1163
1164 dnsmasq_stop()
1165 {
1166         local cfg="$1"
1167         local noresolv resolvfile localuse=0
1168
1169         config_get_bool noresolv "$cfg" noresolv 0
1170         config_get resolvfile "$cfg" "resolvfile"
1171
1172         [ "$noresolv" = 0 ] && [ "$resolvfile" = "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=1
1173         config_get_bool localuse "$cfg" localuse "$localuse"
1174         [ "$localuse" -gt 0 ] && ln -sf "/tmp/resolv.conf.d/resolv.conf.auto" /tmp/resolv.conf
1175
1176         rm -f ${BASEDHCPSTAMPFILE}.${cfg}.*.dhcp
1177 }
1178
1179 add_interface_trigger()
1180 {
1181         local interface ignore
1182
1183         config_get interface "$1" interface
1184         config_get_bool ignore "$1" ignore 0
1185
1186         [ -n "$interface" ] && [ $ignore -eq 0 ] && procd_add_interface_trigger "interface.*" "$interface" /etc/init.d/dnsmasq reload
1187 }
1188
1189 service_triggers()
1190 {
1191         procd_add_reload_trigger "dhcp" "system"
1192
1193         config_load dhcp
1194         config_foreach add_interface_trigger dhcp
1195         config_foreach add_interface_trigger relay
1196 }
1197
1198 boot()
1199 {
1200         BOOT=1
1201         start "$@"
1202 }
1203
1204 start_service() {
1205         local instance="$1"
1206         local instance_found=0
1207         local first_instance=""
1208
1209         . /lib/functions/network.sh
1210
1211         config_cb() {
1212                 local type="$1"
1213                 local name="$2"
1214                 if [ "$type" = "dnsmasq" ]; then
1215                         if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
1216                                 instance_found=1
1217                         fi
1218                         if [ -z "$DEFAULT_INSTANCE" ]; then
1219                                 local disabled
1220                                 config_get_bool disabled "$name" disabled 0
1221                                 if [ "$disabled" -eq 0 ]; then
1222                                         # First enabled section will be assigned default instance name.
1223                                         # Unnamed sections get precedence over named sections.
1224                                         if expr "$cfg" : 'cfg[0-9a-f]*$' >/dev/null = "9"; then # See uci_fixup_section.
1225                                                 DEFAULT_INSTANCE="$name" # Unnamed config section.
1226                                         elif [ -z "$first_instance" ]; then
1227                                                 first_instance="$name"
1228                                         fi
1229                                 fi
1230                         fi
1231                 fi
1232         }
1233
1234         DEFAULT_INSTANCE=""
1235         config_load dhcp
1236         if [ -z "$DEFAULT_INSTANCE" ]; then
1237                 DEFAULT_INSTANCE="$first_instance" # No unnamed config section was found.
1238         fi
1239
1240         if [ -n "$instance" ]; then
1241                 [ "$instance_found" -gt 0 ] || return
1242                 dnsmasq_start "$instance"
1243         else
1244                 config_foreach dnsmasq_start dnsmasq
1245         fi
1246 }
1247
1248 reload_service() {
1249         rc_procd start_service "$@"
1250         procd_send_signal dnsmasq "$@"
1251 }
1252
1253 stop_service() {
1254         local instance="$1"
1255         local instance_found=0
1256
1257         config_cb() {
1258                 local type="$1"
1259                 local name="$2"
1260                 if [ "$type" = "dnsmasq" ]; then
1261                         if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
1262                                 instance_found=1
1263                         fi
1264                 fi
1265         }
1266
1267         config_load dhcp
1268
1269         if [ -n "$instance" ]; then
1270                 [ "$instance_found" -gt 0 ] || return
1271                 dnsmasq_stop "$instance"
1272         else
1273                 config_foreach dnsmasq_stop dnsmasq
1274         fi
1275 }