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_connmark_allowlist() {
 173         xappend "--connmark-allowlist=$1"
 174 }
 175
 176 append_interface() {
 177         network_get_device ifname "$1" || ifname="$1"
 178         xappend "--interface=$ifname"
 179 }
 180
 181 append_listenaddress() {
 182         xappend "--listen-address=$1"
 183 }
 184
 185 append_notinterface() {
 186         network_get_device ifname "$1" || ifname="$1"
 187         xappend "--except-interface=$ifname"
 188 }
 189
 190 ismounted() {
 191         local filename="$1"
 192         local dirname
 193         for dirname in $EXTRA_MOUNT ; do
 194                 case "$filename" in
 195                         "${dirname}/"* | "${dirname}" )
 196                                 return 0
 197                                 ;;
 198                 esac
 199         done
 200
 201         return 1
 202 }
 203
 204 append_addnhosts() {
 205         ismounted "$1" || append EXTRA_MOUNT "$1"
 206         xappend "--addn-hosts=$1"
 207 }
 208
 209 append_bogusnxdomain() {
 210         xappend "--bogus-nxdomain=$1"
 211 }
 212
 213 append_pxe_service() {
 214         xappend "--pxe-service=$1"
 215 }
 216
 217 append_interface_name() {
 218         xappend "--interface-name=$1,$2"
 219 }
 220
 221 filter_dnsmasq() {
 222         local cfg="$1" func="$2" match_cfg="$3" found_cfg
 223
 224         # use entry when no instance entry set, or if it matches
 225         config_get found_cfg "$cfg" "instance"
 226         if [ -z "$found_cfg" ] || [ "$found_cfg" = "$match_cfg" ]; then
 227                 $func $cfg
 228         fi
 229 }
 230
 231 dhcp_subscrid_add() {
 232         local cfg="$1"
 233
 234         config_get networkid "$cfg" networkid
 235         [ -n "$networkid" ] || return 0
 236
 237         config_get subscriberid "$cfg" subscriberid
 238         [ -n "$subscriberid" ] || return 0
 239
 240         xappend "--dhcp-subscrid=set:$networkid,$subscriberid"
 241
 242         config_get_bool force "$cfg" force 0
 243
 244         dhcp_option_add "$cfg" "$networkid" "$force"
 245 }
 246
 247 dhcp_remoteid_add() {
 248         local cfg="$1"
 249
 250         config_get networkid "$cfg" networkid
 251         [ -n "$networkid" ] || return 0
 252
 253         config_get remoteid "$cfg" remoteid
 254         [ -n "$remoteid" ] || return 0
 255
 256         xappend "--dhcp-remoteid=set:$networkid,$remoteid"
 257
 258         config_get_bool force "$cfg" force 0
 259
 260         dhcp_option_add "$cfg" "$networkid" "$force"
 261 }
 262
 263 dhcp_circuitid_add() {
 264         # TODO: DHCPV6 does not have circuitid; catch "option6:"
 265         local cfg="$1"
 266
 267         config_get networkid "$cfg" networkid
 268         [ -n "$networkid" ] || return 0
 269
 270         config_get circuitid "$cfg" circuitid
 271         [ -n "$circuitid" ] || return 0
 272
 273         xappend "--dhcp-circuitid=set:$networkid,$circuitid"
 274
 275         config_get_bool force "$cfg" force 0
 276
 277         dhcp_option_add "$cfg" "$networkid" "$force"
 278 }
 279
 280 dhcp_userclass_add() {
 281         local cfg="$1"
 282
 283         config_get networkid "$cfg" networkid
 284         [ -n "$networkid" ] || return 0
 285
 286         config_get userclass "$cfg" userclass
 287         [ -n "$userclass" ] || return 0
 288
 289         xappend "--dhcp-userclass=set:$networkid,$userclass"
 290
 291         config_get_bool force "$cfg" force 0
 292
 293         dhcp_option_add "$cfg" "$networkid" "$force"
 294 }
 295
 296 dhcp_vendorclass_add() {
 297         # TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
 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 "$vendorclass" ] || return 0
 305
 306         xappend "--dhcp-vendorclass=set:$networkid,$vendorclass"
 307
 308         config_get_bool force "$cfg" force 0
 309
 310         dhcp_option_add "$cfg" "$networkid" "$force"
 311 }
 312
 313 dhcp_match_add() {
 314         local cfg="$1"
 315
 316         config_get networkid "$cfg" networkid
 317         [ -n "$networkid" ] || return 0
 318
 319         config_get match "$cfg" match
 320         [ -n "$match" ] || return 0
 321
 322         xappend "--dhcp-match=set:$networkid,$match"
 323
 324         config_get_bool force "$cfg" force 0
 325
 326         dhcp_option_add "$cfg" "$networkid" "$force"
 327 }
 328
 329 dhcp_host_add() {
 330         local cfg="$1"
 331         local hosttag nametime addrs duids macs tags mtags
 332
 333         config_get_bool force "$cfg" force 0
 334
 335         config_get networkid "$cfg" networkid
 336         [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
 337
 338         config_get_bool enable "$cfg" enable 1
 339         [ "$enable" = "0" ] && return 0
 340
 341         config_get name "$cfg" name
 342         config_get ip "$cfg" ip
 343         config_get hostid "$cfg" hostid
 344
 345         [ -z "$ip" ] && [ -z "$name" ] && [ -z "$hostid" ] && return 0
 346
 347         config_get_bool dns "$cfg" dns 0
 348         [ "$dns" = "1" ] && [ -n "$ip" ] && [ -n "$name" ] && {
 349                 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE_TMP
 350         }
 351
 352         config_get mac "$cfg" mac
 353         config_get duid "$cfg" duid
 354         config_get tag "$cfg" tag
 355
 356         add_tag() {
 357                 mtags="${mtags}tag:$1,"
 358         }
 359         config_list_foreach "$cfg" match_tag add_tag
 360
 361         if [ -n "$mac" ]; then
 362                 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
 363                 # many MAC are possible to track a laptop ON/OFF dock
 364                 for m in $mac; do append macs "$m" ","; done
 365         fi
 366
 367         if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ -n "$duid" ]; then
 368                 # --dhcp-host=id:00:03:00:01:12:00:00:01:02:03,[::beef],lap
 369                 # one (virtual) machine gets one DUID per RFC3315
 370                 duids="id:${duid// */}"
 371         fi
 372
 373         if [ -z "$macs" ] && [ -z "$duids" ]; then
 374                 # --dhcp-host=lap,192.168.0.199,[::beef]
 375                 [ -n "$name" ] || return 0
 376                 macs="$name"
 377                 name=""
 378         fi
 379
 380         if [ -n "$hostid" ]; then
 381                 hex_to_hostid hostid "$hostid"
 382         fi
 383
 384         if [ -n "$tag" ]; then
 385                 for t in $tag; do append tags "$t" ",set:"; done
 386         fi
 387
 388         config_get_bool broadcast "$cfg" broadcast 0
 389         config_get leasetime "$cfg" leasetime
 390
 391         [ "$broadcast" = "0" ] && broadcast= || broadcast=",set:needs-broadcast"
 392
 393         hosttag="${networkid:+,set:${networkid}}${tags:+,set:${tags}}$broadcast"
 394         nametime="${name:+,$name}${leasetime:+,$leasetime}"
 395
 396         if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
 397                 addrs="${ip:+,$ip}${hostid:+,[::$hostid]}"
 398                 xappend "--dhcp-host=$mtags$macs${duids:+,$duids}$hosttag$addrs$nametime"
 399         else
 400                 xappend "--dhcp-host=$mtags$macs$hosttag${ip:+,$ip}$nametime"
 401         fi
 402 }
 403
 404 dhcp_this_host_add() {
 405         local net="$1"
 406         local ifname="$2"
 407         local mode="$3"
 408         local routerstub routername ifdashname
 409         local lanaddr lanaddr6 lanaddrs6 ulaprefix
 410
 411         if [ "$mode" -gt 0 ] ; then
 412                 ifdashname="${ifname//./-}"
 413                 routerstub="$( md5sum /etc/os-release )"
 414                 routerstub="router-${routerstub// */}"
 415                 routername="$( uci_get system @system[0] hostname $routerstub )"
 416
 417                 if [ "$mode" -gt 1 ] ; then
 418                         if [ "$mode" -gt 2 ] ; then
 419                                 if [ "$mode" -gt 3 ] ; then
 420                                         append_interface_name "$ifdashname.$routername.$DOMAIN" "$ifname"
 421                                 fi
 422
 423                                 append_interface_name "$routername.$DOMAIN" "$ifname"
 424                         fi
 425
 426                         # All IP addresses discovered by dnsmasq will be labeled (except fe80::)
 427                         append_interface_name "$routername" "$ifname"
 428
 429                 else
 430                         # This uses a static host file entry for only limited addresses.
 431                         # Use dnsmasq option "--expandhosts" to enable FQDN on host files.
 432                         ulaprefix="$(uci_get network @globals[0] ula_prefix)"
 433                         network_get_ipaddr lanaddr "$net"
 434                         network_get_ipaddrs6 lanaddrs6 "$net"
 435
 436                         if [ -n "$lanaddr" ] ; then
 437                                 dhcp_domain_add "" "$routername" "$lanaddr"
 438                         fi
 439
 440                         if [ -n "$ulaprefix" ] && [ -n "$lanaddrs6" ] ; then
 441                                 for lanaddr6 in $lanaddrs6 ; do
 442                                         case "$lanaddr6" in
 443                                         "${ulaprefix%%:/*}"*)
 444                                                 dhcp_domain_add "" "$routername" "$lanaddr6"
 445                                                 ;;
 446                                         esac
 447                                 done
 448                         fi
 449                 fi
 450         fi
 451 }
 452
 453 dhcp_tag_add() {
 454         # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
 455         local cfg="$1"
 456
 457         tag="$cfg"
 458
 459         [ -n "$tag" ] || return 0
 460
 461         config_get_bool force "$cfg" force 0
 462         [ "$force" = "0" ] && force=
 463
 464         config_get option "$cfg" dhcp_option
 465         for o in $option; do
 466                 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
 467         done
 468 }
 469
 470 dhcp_mac_add() {
 471         local cfg="$1"
 472
 473         config_get networkid "$cfg" networkid
 474         [ -n "$networkid" ] || return 0
 475
 476         config_get mac "$cfg" mac
 477         [ -n "$mac" ] || return 0
 478
 479         xappend "--dhcp-mac=$networkid,$mac"
 480
 481         dhcp_option_add "$cfg" "$networkid"
 482 }
 483
 484 dhcp_boot_add() {
 485         # TODO: BOOTURL is different between DHCPv4 and DHCPv6
 486         local cfg="$1"
 487
 488         config_get networkid "$cfg" networkid
 489
 490         config_get filename "$cfg" filename
 491         [ -n "$filename" ] || return 0
 492
 493         config_get servername "$cfg" servername
 494         config_get serveraddress "$cfg" serveraddress
 495
 496         [ -n "$serveraddress" ] && [ ! -n "$servername" ] && return 0
 497
 498         xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
 499
 500         config_get_bool force "$cfg" force 0
 501
 502         dhcp_option_add "$cfg" "$networkid" "$force"
 503 }
 504
 505
 506 dhcp_add() {
 507         local cfg="$1"
 508         local dhcp6range="::"
 509         local nettag
 510         local tags
 511
 512         config_get net "$cfg" interface
 513         [ -n "$net" ] || return 0
 514
 515         config_get networkid "$cfg" networkid
 516         [ -n "$networkid" ] || networkid="$net"
 517
 518         network_get_device ifname "$net" || return 0
 519
 520         [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
 521                 DNS_SERVERS="$DNS_SERVERS $dnsserver"
 522         }
 523
 524         append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && {
 525                 # Many ISP do not have useful names for DHCP customers (your WAN).
 526                 dhcp_this_host_add "$net" "$ifname" "$ADD_WAN_FQDN"
 527                 return 0
 528         }
 529
 530         network_get_subnet subnet "$net" || return 0
 531         network_get_protocol proto "$net" || return 0
 532
 533         # Do not support non-static interfaces for now
 534         [ static = "$proto" ] || return 0
 535
 536         # Override interface netmask with dhcp config if applicable
 537         config_get netmask "$cfg" netmask "${subnet##*/}"
 538
 539         #check for an already active dhcp server on the interface, unless 'force' is set
 540         config_get_bool force "$cfg" force 0
 541         [ $force -gt 0 ] || dhcp_check "$ifname" || {
 542                 logger -t dnsmasq \
 543                         "found already running DHCP-server on interface '$ifname'" \
 544                         "refusing to start, use 'option force 1' to override"
 545                 return 0
 546         }
 547
 548         config_get start "$cfg" start 100
 549         config_get limit "$cfg" limit 150
 550         config_get leasetime "$cfg" leasetime 12h
 551         config_get options "$cfg" options
 552         config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
 553
 554         config_get dhcpv4 "$cfg" dhcpv4
 555         config_get dhcpv6 "$cfg" dhcpv6
 556
 557         config_get ra "$cfg" ra
 558         config_get ra_management "$cfg" ra_management
 559         config_get ra_preference "$cfg" ra_preference
 560         config_get dns "$cfg" dns
 561
 562         config_list_foreach "$cfg" "interface_name" append_interface_name "$ifname"
 563
 564         # Put the router host name on this DHCP served interface address(es)
 565         dhcp_this_host_add "$net" "$ifname" "$ADD_LOCAL_FQDN"
 566
 567         start="$( dhcp_calc "$start" )"
 568
 569         add_tag() {
 570                 tags="${tags}tag:$1,"
 571         }
 572         config_list_foreach "$cfg" tag add_tag
 573
 574         nettag="${networkid:+set:${networkid},}"
 575
 576         if [ "$limit" -gt 0 ] ; then
 577                 limit=$((limit-1))
 578         fi
 579
 580         eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
 581
 582         if [ "$dynamicdhcp" = "0" ] ; then
 583                 END="static"
 584                 dhcp6range="::,static"
 585         else
 586                 dhcp6range="::1000,::ffff"
 587         fi
 588
 589
 590         if [ "$dhcpv4" != "disabled" ] ; then
 591                 xappend "--dhcp-range=$tags$nettag$START,$END,$NETMASK,$leasetime${options:+ $options}"
 592         fi
 593
 594
 595         if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ "$ra" = "server" ] ; then
 596                 # Note: dnsmasq cannot just be a DHCPv6 server (all-in-1)
 597                 # and let some other machine(s) send RA pointing to it.
 598
 599                 case $ra_preference in
 600                 *high*)
 601                         xappend "--ra-param=$ifname,high,0,7200"
 602                         ;;
 603                 *low*)
 604                         xappend "--ra-param=$ifname,low,0,7200"
 605                         ;;
 606                 *)
 607                         # Send UNSOLICITED RA at default interval and live for 2 hours.
 608                         # TODO: convert flexible lease time into route life time (only seconds).
 609                         xappend "--ra-param=$ifname,0,7200"
 610                         ;;
 611                 esac
 612
 613                 if [ "$dhcpv6" = "disabled" ] ; then
 614                         ra_management="3"
 615                 fi
 616
 617
 618                 case $ra_management in
 619                 0)
 620                         # SLACC with DCHP for extended options
 621                         xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-stateless,ra-names"
 622                         ;;
 623                 2)
 624                         # DHCP address and RA only for management redirection
 625                         xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,$leasetime"
 626                         ;;
 627                 3)
 628                         # SLAAC only but dnsmasq attempts to link HOSTNAME, DHCPv4 MAC, and SLAAC
 629                         xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-only,ra-names"
 630                         ;;
 631                 *)
 632                         # SLAAC and full DHCP
 633                         xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,slaac,ra-names,$leasetime"
 634                         ;;
 635                 esac
 636
 637                 if [ -n "$dns" ]; then
 638                         dnss=""
 639                         for d in $dns; do append dnss "[$d]" ","; done
 640                 else
 641                         dnss="[::]"
 642                 fi
 643
 644                 dhcp_option_append "option6:dns-server,$dnss" "$networkid"
 645         fi
 646
 647         dhcp_option_add "$cfg" "$networkid" 0
 648         dhcp_option_add "$cfg" "$networkid" 2
 649 }
 650
 651 dhcp_option_append() {
 652         local option="$1"
 653         local networkid="$2"
 654         local force="$3"
 655
 656         xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$option"
 657 }
 658
 659 dhcp_option_add() {
 660         # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
 661         local cfg="$1"
 662         local networkid="$2"
 663         local force="$3"
 664         local opt="dhcp_option"
 665
 666         [ "$force" = "0" ] && force=
 667         [ "$force" = "2" ] && opt="dhcp_option_force"
 668
 669         local list_len
 670         config_get list_len "$cfg" "${opt}_LENGTH"
 671
 672         if [ -n "$list_len" ]; then
 673                 config_list_foreach "$cfg" "$opt" dhcp_option_append "$networkid" "$force"
 674         else
 675                 config_get dhcp_option "$cfg" "$opt"
 676
 677                 [ -n "$dhcp_option" ] && echo "Warning: the 'option $opt' syntax is deprecated, use 'list $opt'" >&2
 678
 679                 local option
 680                 for option in $dhcp_option; do
 681                         dhcp_option_append "$option" "$networkid" "$force"
 682                 done
 683         fi
 684 }
 685
 686 dhcp_domain_add() {
 687         local cfg="$1"
 688         local ip name names record
 689
 690         config_get names "$cfg" name "$2"
 691         [ -n "$names" ] || return 0
 692
 693         config_get ip "$cfg" ip "$3"
 694         [ -n "$ip" ] || return 0
 695
 696         for name in $names; do
 697                 record="${record:+$record }$name"
 698         done
 699
 700         echo "$ip $record" >> $HOSTFILE_TMP
 701 }
 702
 703 dhcp_srv_add() {
 704         local cfg="$1"
 705
 706         config_get srv "$cfg" srv
 707         [ -n "$srv" ] || return 0
 708
 709         config_get target "$cfg" target
 710         [ -n "$target" ] || return 0
 711
 712         config_get port "$cfg" port
 713         [ -n "$port" ] || return 0
 714
 715         config_get class "$cfg" class
 716         config_get weight "$cfg" weight
 717
 718         local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
 719
 720         xappend "--srv-host=$service"
 721 }
 722
 723 dhcp_mx_add() {
 724         local cfg="$1"
 725         local domain relay pref
 726
 727         config_get domain "$cfg" domain
 728         [ -n "$domain" ] || return 0
 729
 730         config_get relay "$cfg" relay
 731         [ -n "$relay" ] || return 0
 732
 733         config_get pref "$cfg" pref 0
 734
 735         local service="$domain,$relay,$pref"
 736
 737         xappend "--mx-host=$service"
 738 }
 739
 740 dhcp_cname_add() {
 741         local cfg="$1"
 742         local cname target
 743
 744         config_get cname "$cfg" cname
 745         [ -n "$cname" ] || return 0
 746
 747         config_get target "$cfg" target
 748         [ -n "$target" ] || return 0
 749
 750         xappend "--cname=${cname},${target}"
 751 }
 752
 753 dhcp_hostrecord_add() {
 754         local cfg="$1"
 755         local names addresses record val
 756
 757         config_get names "$cfg" name "$2"
 758         if [ -z "$names" ]; then
 759                 return 0
 760         fi
 761
 762         config_get addresses "$cfg" ip "$3"
 763         if [ -z "$addresses" ]; then
 764                 return 0
 765         fi
 766
 767         for val in $names $addresses; do
 768                 record="${record:+$record,}$val"
 769         done
 770
 771         xappend "--host-record=$record"
 772 }
 773
 774 dhcp_relay_add() {
 775         local cfg="$1"
 776         local local_addr server_addr interface
 777
 778         config_get local_addr "$cfg" local_addr
 779         [ -n "$local_addr" ] || return 0
 780
 781         config_get server_addr "$cfg" server_addr
 782         [ -n "$server_addr" ] || return 0
 783
 784         config_get interface "$cfg" interface
 785         if [ -z "$interface" ]; then
 786                 xappend "--dhcp-relay=$local_addr,$server_addr"
 787         else
 788                 network_get_device ifname "$interface" || return
 789                 xappend "--dhcp-relay=$local_addr,$server_addr,$ifname"
 790         fi
 791 }
 792
 793 dnsmasq_ipset_add() {
 794         local cfg="$1"
 795         local ipsets domains
 796
 797         add_ipset() {
 798                 ipsets="${ipsets:+$ipsets,}$1"
 799         }
 800
 801         add_domain() {
 802                 # leading '/' is expected
 803                 domains="$domains/$1"
 804         }
 805
 806         config_list_foreach "$cfg" "name" add_ipset
 807         config_list_foreach "$cfg" "domain" add_domain
 808
 809         if [ -z "$ipsets" ] || [ -z "$domains" ]; then
 810                 return 0
 811         fi
 812
 813         xappend "--ipset=$domains/$ipsets"
 814 }
 815
 816 dnsmasq_start()
 817 {
 818         local cfg="$1"
 819         local disabled user_dhcpscript logfacility
 820         local resolvfile resolvdir localuse=0
 821
 822         config_get_bool disabled "$cfg" disabled 0
 823         [ "$disabled" -gt 0 ] && return 0
 824
 825         # reset list of DOMAINS, DNS servers and EXTRA mounts (for each dnsmasq instance)
 826         DNS_SERVERS=""
 827         DOMAIN=""
 828         EXTRA_MOUNT=""
 829         CONFIGFILE="${BASECONFIGFILE}.${cfg}"
 830         CONFIGFILE_TMP="${CONFIGFILE}.$$"
 831         HOSTFILE="${BASEHOSTFILE}.${cfg}"
 832         HOSTFILE_TMP="${HOSTFILE}.$$"
 833         HOSTFILE_DIR="$(dirname "$HOSTFILE")"
 834         BASEDHCPSTAMPFILE_CFG="${BASEDHCPSTAMPFILE}.${cfg}"
 835
 836         # before we can call xappend
 837         umask u=rwx,g=rx,o=rx
 838         mkdir -p /var/run/dnsmasq/
 839         mkdir -p $(dirname $CONFIGFILE)
 840         mkdir -p "$HOSTFILE_DIR"
 841         mkdir -p /var/lib/misc
 842         chown dnsmasq:dnsmasq /var/run/dnsmasq
 843
 844         echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
 845         echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE_TMP
 846
 847         local dnsmasqconffile="/etc/dnsmasq.${cfg}.conf"
 848         if [ ! -r "$dnsmasqconffile" ]; then
 849                 dnsmasqconffile=/etc/dnsmasq.conf
 850         fi
 851
 852         # if we did this last, we could override auto-generated config
 853         [ -f "${dnsmasqconffile}" ] && {
 854                 xappend "--conf-file=${dnsmasqconffile}"
 855         }
 856
 857         $PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
 858
 859
 860         if [ -x /usr/sbin/odhcpd ] && [ -x /etc/init.d/odhcpd ] ; then
 861                 local odhcpd_is_main odhcpd_is_enabled
 862                 config_get odhcpd_is_main odhcpd maindhcp 0
 863                 /etc/init.d/odhcpd enabled && odhcpd_is_enabled=1 || odhcpd_is_enabled=0
 864
 865
 866                 if [ "$odhcpd_is_enabled" -eq 0 ] && [ "$DHCPv6CAPABLE" -eq 1 ] ; then
 867                         # DHCP V4 and V6 in DNSMASQ
 868                         DNSMASQ_DHCP_VER=6
 869                 elif [ "$odhcpd_is_main" -gt 0 ] ; then
 870                         # ODHCPD is doing it all
 871                         DNSMASQ_DHCP_VER=0
 872                 else
 873                         # You have ODHCPD but use DNSMASQ for DHCPV4
 874                         DNSMASQ_DHCP_VER=4
 875                 fi
 876
 877         elif [ "$DHCPv6CAPABLE" -eq 1 ] ; then
 878                 # DHCP V4 and V6 in DNSMASQ
 879                 DNSMASQ_DHCP_VER=6
 880         else
 881                 DNSMASQ_DHCP_VER=4
 882         fi
 883
 884         # Allow DHCP/DHCPv6 to be handled by ISC DHCPD
 885         if [ -x /usr/sbin/dhcpd ] ; then
 886                 if [ -x /etc/init.d/dhcpd ] ; then
 887                         /etc/init.d/dhcpd enabled && DNSMASQ_DHCP_VER=0
 888                 fi
 889                 if [ -x /etc/init.d/dhcpd6 ] && [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
 890                         /etc/init.d/dhcpd6 enabled && DNSMASQ_DHCP_VER=4
 891                 fi
 892         fi
 893
 894         append_bool "$cfg" authoritative "--dhcp-authoritative"
 895         append_bool "$cfg" nodaemon "--no-daemon"
 896         append_bool "$cfg" domainneeded "--domain-needed"
 897         append_bool "$cfg" filterwin2k "--filterwin2k"
 898         append_bool "$cfg" nohosts "--no-hosts"
 899         append_bool "$cfg" nonegcache "--no-negcache"
 900         append_bool "$cfg" strictorder "--strict-order"
 901         append_bool "$cfg" logqueries "--log-queries=extra"
 902         append_bool "$cfg" noresolv "--no-resolv"
 903         append_bool "$cfg" localise_queries "--localise-queries"
 904         append_bool "$cfg" readethers "--read-ethers"
 905
 906         local instance_name="dnsmasq.$cfg"
 907         if [ "$cfg" = "$DEFAULT_INSTANCE" ]; then
 908                 instance_name="dnsmasq"
 909         fi
 910         config_get_bool dbus "$cfg" "dbus" 0
 911         [ $dbus -gt 0 ] && xappend "--enable-dbus=uk.org.thekelleys.$instance_name"
 912         config_get_bool ubus "$cfg" "ubus" 1
 913         [ $ubus -gt 0 ] && xappend "--enable-ubus=$instance_name"
 914
 915         append_bool "$cfg" expandhosts "--expand-hosts"
 916         config_get tftp_root "$cfg" "tftp_root"
 917         [ -n "$tftp_root" ] && mkdir -p "$tftp_root" && append_bool "$cfg" enable_tftp "--enable-tftp"
 918         append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
 919         append_bool "$cfg" nonwildcard "--bind-dynamic" 1
 920         append_bool "$cfg" fqdn "--dhcp-fqdn"
 921         append_bool "$cfg" proxydnssec "--proxy-dnssec"
 922         append_bool "$cfg" localservice "--local-service"
 923         append_bool "$cfg" logdhcp "--log-dhcp"
 924         append_bool "$cfg" quietdhcp "--quiet-dhcp"
 925         append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
 926         append_bool "$cfg" allservers "--all-servers"
 927         append_bool "$cfg" noping "--no-ping"
 928         append_bool "$cfg" rapidcommit "--dhcp-rapid-commit"
 929         append_bool "$cfg" scriptarp "--script-arp"
 930
 931         append_parm "$cfg" logfacility "--log-facility"
 932         config_get logfacility "$cfg" "logfacility"
 933         append_parm "$cfg" cachesize "--cache-size"
 934         append_parm "$cfg" dnsforwardmax "--dns-forward-max"
 935         append_parm "$cfg" port "--port"
 936         append_parm "$cfg" ednspacket_max "--edns-packet-max"
 937         append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
 938         append_parm "$cfg" "queryport" "--query-port"
 939         append_parm "$cfg" "minport" "--min-port"
 940         append_parm "$cfg" "maxport" "--max-port"
 941         append_parm "$cfg" "domain" "--domain"
 942         append_parm "$cfg" "local" "--local"
 943         config_list_foreach "$cfg" "listen_address" append_listenaddress
 944         config_list_foreach "$cfg" "server" append_server
 945         config_list_foreach "$cfg" "rev_server" append_rev_server
 946         config_list_foreach "$cfg" "address" append_address
 947
 948         local connmark_allowlist_enable
 949         config_get connmark_allowlist_enable "$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 "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
 970
 971         local serversfile
 972         config_get serversfile "$cfg" "serversfile"
 973         [ -n "$serversfile" ] && {
 974                 xappend "--servers-file=$serversfile"
 975                 append EXTRA_MOUNT "$serversfile"
 976         }
 977
 978         append_parm "$cfg" "tftp_root" "--tftp-root"
 979         append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
 980         append_parm "$cfg" "local_ttl" "--local-ttl"
 981         append_parm "$cfg" "max_ttl" "--max-ttl"
 982         append_parm "$cfg" "min_cache_ttl" "--min-cache-ttl"
 983         append_parm "$cfg" "max_cache_ttl" "--max-cache-ttl"
 984         append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
 985         append_parm "$cfg" "tftp_unique_root" "--tftp-unique-root"
 986         config_list_foreach "$cfg" "pxe_service" append_pxe_service
 987         config_get DOMAIN "$cfg" domain
 988
 989         config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
 990         config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
 991         config_get ADD_LOCAL_FQDN "$cfg" add_local_fqdn ""
 992         config_get ADD_WAN_FQDN "$cfg" add_wan_fqdn 0
 993
 994         if [ -z "$ADD_LOCAL_FQDN" ] ; then
 995                 # maintain support for previous UCI
 996                 ADD_LOCAL_FQDN="$ADD_LOCAL_HOSTNAME"
 997         fi
 998
 999         config_get user_dhcpscript $cfg dhcpscript
1000         if has_handler || [ -n "$user_dhcpscript" ]; then
1001                 xappend "--dhcp-script=$DHCPSCRIPT"
1002                 xappend "--script-arp"
1003         fi
1004
1005         config_get leasefile $cfg leasefile "/tmp/dhcp.leases"
1006         [ -n "$leasefile" ] && [ ! -e "$leasefile" ] && touch "$leasefile"
1007         config_get_bool cachelocal "$cfg" cachelocal 1
1008
1009         config_get_bool noresolv "$cfg" noresolv 0
1010         if [ "$noresolv" != "1" ]; then
1011                 config_get resolvfile "$cfg" resolvfile /tmp/resolv.conf.d/resolv.conf.auto
1012                 [ -n "$resolvfile" ] && [ ! -e "$resolvfile" ] && touch "$resolvfile"
1013                 xappend "--resolv-file=$resolvfile"
1014                 [ "$resolvfile" = "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=1
1015                 resolvdir="$(dirname "$resolvfile")"
1016         fi
1017         config_get_bool localuse "$cfg" localuse "$localuse"
1018
1019         config_get hostsfile "$cfg" dhcphostsfile
1020         [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
1021
1022         local rebind
1023         config_get_bool rebind "$cfg" rebind_protection 1
1024         [ $rebind -gt 0 ] && {
1025                 log_once \
1026                         "DNS rebinding protection is active," \
1027                         "will discard upstream RFC1918 responses!"
1028                 xappend "--stop-dns-rebind"
1029
1030                 local rebind_localhost
1031                 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
1032                 [ $rebind_localhost -gt 0 ] && {
1033                         log_once "Allowing 127.0.0.0/8 responses"
1034                         xappend "--rebind-localhost-ok"
1035                 }
1036
1037                 append_rebind_domain() {
1038                         log_once "Allowing RFC1918 responses for domain $1"
1039                         xappend "--rebind-domain-ok=$1"
1040                 }
1041
1042                 config_list_foreach "$cfg" rebind_domain append_rebind_domain
1043         }
1044
1045         config_get_bool dnssec "$cfg" dnssec 0
1046         [ "$dnssec" -gt 0 ] && {
1047                 xappend "--conf-file=$TRUSTANCHORSFILE"
1048                 xappend "--dnssec"
1049                 [ -x /etc/init.d/sysntpd ] && {
1050                         if /etc/init.d/sysntpd enabled || [ "$(uci_get system.ntp.enabled)" = "1" ] ; then
1051                                 [ -f "$TIMEVALIDFILE" ] || xappend "--dnssec-no-timecheck"
1052                         fi
1053                 }
1054                 config_get_bool dnsseccheckunsigned "$cfg" dnsseccheckunsigned 1
1055                 [ "$dnsseccheckunsigned" -eq 0 ] && xappend "--dnssec-check-unsigned=no"
1056         }
1057
1058         config_get addmac "$cfg" addmac 0
1059         [ "$addmac" != "0" ] && {
1060                 [ "$addmac" = "1" ] && addmac=
1061                 xappend "--add-mac${addmac:+="$addmac"}"
1062         }
1063
1064         dhcp_option_add "$cfg" "" 0
1065         dhcp_option_add "$cfg" "" 2
1066
1067         xappend "--dhcp-broadcast=tag:needs-broadcast"
1068
1069
1070         config_get dnsmasqconfdir "$cfg" confdir "/tmp/dnsmasq.d"
1071         xappend "--conf-dir=$dnsmasqconfdir"
1072         dnsmasqconfdir="${dnsmasqconfdir%%,*}"
1073         [ ! -d "$dnsmasqconfdir" ] && mkdir -p $dnsmasqconfdir
1074         xappend "--user=dnsmasq"
1075         xappend "--group=dnsmasq"
1076         echo >> $CONFIGFILE_TMP
1077
1078         config_get_bool enable_tftp "$cfg" enable_tftp 0
1079         [ "$enable_tftp" -gt 0 ] && {
1080                 config_get tftp_root "$cfg" tftp_root
1081                 append EXTRA_MOUNT $tftp_root
1082         }
1083
1084         config_foreach filter_dnsmasq host dhcp_host_add "$cfg"
1085         echo >> $CONFIGFILE_TMP
1086
1087         config_get_bool dhcpbogushostname "$cfg" dhcpbogushostname 1
1088         [ "$dhcpbogushostname" -gt 0 ] && {
1089                 xappend "--dhcp-ignore-names=tag:dhcp_bogus_hostname"
1090                 [ -r "$DHCPBOGUSHOSTNAMEFILE" ] && xappend "--conf-file=$DHCPBOGUSHOSTNAMEFILE"
1091         }
1092
1093         config_foreach filter_dnsmasq boot dhcp_boot_add "$cfg"
1094         config_foreach filter_dnsmasq mac dhcp_mac_add "$cfg"
1095         config_foreach filter_dnsmasq tag dhcp_tag_add "$cfg"
1096         config_foreach filter_dnsmasq vendorclass dhcp_vendorclass_add "$cfg"
1097         config_foreach filter_dnsmasq userclass dhcp_userclass_add "$cfg"
1098         config_foreach filter_dnsmasq circuitid dhcp_circuitid_add "$cfg"
1099         config_foreach filter_dnsmasq remoteid dhcp_remoteid_add "$cfg"
1100         config_foreach filter_dnsmasq subscrid dhcp_subscrid_add "$cfg"
1101         config_foreach filter_dnsmasq match dhcp_match_add "$cfg"
1102         config_foreach filter_dnsmasq domain dhcp_domain_add "$cfg"
1103         config_foreach filter_dnsmasq hostrecord dhcp_hostrecord_add "$cfg"
1104         [ -n "$BOOT" ] || config_foreach filter_dnsmasq relay dhcp_relay_add "$cfg"
1105
1106         echo >> $CONFIGFILE_TMP
1107         config_foreach filter_dnsmasq srvhost dhcp_srv_add "$cfg"
1108         config_foreach filter_dnsmasq mxhost dhcp_mx_add "$cfg"
1109         echo >> $CONFIGFILE_TMP
1110
1111         config_get_bool boguspriv "$cfg" boguspriv 1
1112         [ "$boguspriv" -gt 0 ] && {
1113                 xappend "--bogus-priv"
1114                 [ -r "$RFC6761FILE" ] && xappend "--conf-file=$RFC6761FILE"
1115         }
1116
1117         if [ "$DNSMASQ_DHCP_VER" -gt 4 ] ; then
1118                 # Enable RA feature for when/if it is constructed,
1119                 # and RA is selected per interface pool (RA, DHCP, or both),
1120                 # but no one (should) want RA broadcast in syslog
1121                 [ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
1122                 xappend "--enable-ra"
1123                 xappend "--quiet-ra"
1124                 append_bool "$cfg" quietdhcp "--quiet-dhcp6"
1125
1126         elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
1127                 [ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
1128         fi
1129
1130
1131         echo >> $CONFIGFILE_TMP
1132         config_foreach filter_dnsmasq cname dhcp_cname_add "$cfg"
1133         echo >> $CONFIGFILE_TMP
1134
1135         echo >> $CONFIGFILE_TMP
1136         config_foreach filter_dnsmasq ipset dnsmasq_ipset_add "$cfg"
1137         echo >> $CONFIGFILE_TMP
1138
1139         echo >> $CONFIGFILE_TMP
1140         mv -f $CONFIGFILE_TMP $CONFIGFILE
1141         mv -f $HOSTFILE_TMP $HOSTFILE
1142
1143         [ "$localuse" -gt 0 ] && {
1144                 rm -f /tmp/resolv.conf
1145                 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
1146                         echo "search $DOMAIN" >> /tmp/resolv.conf
1147                 }
1148                 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
1149                 [ -e /proc/sys/net/ipv6 ] && DNS_SERVERS="$DNS_SERVERS ::1"
1150                 for DNS_SERVER in $DNS_SERVERS ; do
1151                         echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
1152                 done
1153         }
1154
1155         procd_open_instance $cfg
1156         procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq."${cfg}".pid
1157         procd_set_param file $CONFIGFILE
1158         [ -n "$user_dhcpscript" ] && procd_set_param env USER_DHCPSCRIPT="$user_dhcpscript"
1159         procd_set_param respawn
1160
1161         local instance_ifc instance_netdev
1162         config_get instance_ifc "$cfg" interface
1163         [ -n "$instance_ifc" ] && network_get_device instance_netdev "$instance_ifc" &&
1164                 [ -n "$instance_netdev" ] && procd_set_param netdev $instance_netdev
1165
1166         procd_add_jail dnsmasq ubus log
1167         procd_add_jail_mount $CONFIGFILE $DHCPBOGUSHOSTNAMEFILE $DHCPSCRIPT $DHCPSCRIPT_DEPENDS
1168         procd_add_jail_mount $EXTRA_MOUNT $RFC6761FILE $TRUSTANCHORSFILE
1169         procd_add_jail_mount $dnsmasqconffile $dnsmasqconfdir $resolvdir $user_dhcpscript
1170         procd_add_jail_mount /etc/passwd /etc/group /etc/TZ /etc/hosts /etc/ethers
1171         procd_add_jail_mount_rw /var/run/dnsmasq/ $leasefile
1172         case "$logfacility" in */*)
1173                 [ ! -e "$logfacility" ] && touch "$logfacility"
1174                 procd_add_jail_mount_rw "$logfacility"
1175         esac
1176
1177         procd_close_instance
1178 }
1179
1180 dnsmasq_stop()
1181 {
1182         local cfg="$1"
1183         local noresolv resolvfile localuse=0
1184
1185         config_get_bool noresolv "$cfg" noresolv 0
1186         config_get resolvfile "$cfg" "resolvfile"
1187
1188         [ "$noresolv" = 0 ] && [ "$resolvfile" = "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=1
1189         config_get_bool localuse "$cfg" localuse "$localuse"
1190         [ "$localuse" -gt 0 ] && ln -sf "/tmp/resolv.conf.d/resolv.conf.auto" /tmp/resolv.conf
1191
1192         rm -f ${BASEDHCPSTAMPFILE}.${cfg}.*.dhcp
1193 }
1194
1195 add_interface_trigger()
1196 {
1197         local interface ignore
1198
1199         config_get interface "$1" interface
1200         config_get_bool ignore "$1" ignore 0
1201
1202         [ -n "$interface" ] && [ $ignore -eq 0 ] && procd_add_interface_trigger "interface.*" "$interface" /etc/init.d/dnsmasq reload
1203 }
1204
1205 service_triggers()
1206 {
1207         procd_add_reload_trigger "dhcp" "system"
1208
1209         config_load dhcp
1210         config_foreach add_interface_trigger dhcp
1211         config_foreach add_interface_trigger relay
1212 }
1213
1214 boot()
1215 {
1216         BOOT=1
1217         start "$@"
1218 }
1219
1220 start_service() {
1221         local instance="$1"
1222         local instance_found=0
1223         local first_instance=""
1224
1225         . /lib/functions/network.sh
1226
1227         config_cb() {
1228                 local type="$1"
1229                 local name="$2"
1230                 if [ "$type" = "dnsmasq" ]; then
1231                         if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
1232                                 instance_found=1
1233                         fi
1234                         if [ -z "$DEFAULT_INSTANCE" ]; then
1235                                 local disabled
1236                                 config_get_bool disabled "$name" disabled 0
1237                                 if [ "$disabled" -eq 0 ]; then
1238                                         # First enabled section will be assigned default instance name.
1239                                         # Unnamed sections get precedence over named sections.
1240                                         if expr "$cfg" : 'cfg[0-9a-f]*$' >/dev/null = "9"; then # See uci_fixup_section.
1241                                                 DEFAULT_INSTANCE="$name" # Unnamed config section.
1242                                         elif [ -z "$first_instance" ]; then
1243                                                 first_instance="$name"
1244                                         fi
1245                                 fi
1246                         fi
1247                 fi
1248         }
1249
1250         DEFAULT_INSTANCE=""
1251         config_load dhcp
1252         if [ -z "$DEFAULT_INSTANCE" ]; then
1253                 DEFAULT_INSTANCE="$first_instance" # No unnamed config section was found.
1254         fi
1255
1256         if [ -n "$instance" ]; then
1257                 [ "$instance_found" -gt 0 ] || return
1258                 dnsmasq_start "$instance"
1259         else
1260                 config_foreach dnsmasq_start dnsmasq
1261         fi
1262 }
1263
1264 reload_service() {
1265         rc_procd start_service "$@"
1266         procd_send_signal dnsmasq "$@"
1267 }
1268
1269 stop_service() {
1270         local instance="$1"
1271         local instance_found=0
1272
1273         config_cb() {
1274                 local type="$1"
1275                 local name="$2"
1276                 if [ "$type" = "dnsmasq" ]; then
1277                         if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
1278                                 instance_found=1
1279                         fi
1280                 fi
1281         }
1282
1283         config_load dhcp
1284
1285         if [ -n "$instance" ]; then
1286                 [ "$instance_found" -gt 0 ] || return
1287                 dnsmasq_stop "$instance"
1288         else
1289                 config_foreach dnsmasq_stop dnsmasq
1290         fi
1291 }